Using the command below, you can summon a Penguin without any mod or resource pack.

To spawn a Penguin, you have to obtain a Penguin Spawn Egg. You have to throw a snowball and an egg to the ground to make a Penguin Spawn Egg or right-click on the sign on the side of the command box that is written: "[​GIVE EGG]".

Watch on YouTube: https://youtu.be/85lhgIMacmQ
Official command: https://torchcraftyt.github.io/Commands/Penguin.html

---

Triple-click to select all the commands then right-click and choose copy. Next, get in your world, and give yourself a command block (using /give @s command_block). Paste the command in the command block (using Ctrl+C or Cmd+C). Finally, place a Redstone block next to the command block.

summon minecraft:falling_block ~ ~1 ~ {"BlockState":{"Name":"redstone_block"},"Time":1,"Passengers":[{"id":"villager","Health":0,"Passengers":[{"id":"falling_block","Time":1,"BlockState":{"Name":"activator_rail"},"Passengers":[{"id":"command_block_minecart","Command":"gamerule commandBlockOutput false"},{"id":"command_block_minecart","Command":"setblock ~0 ~-1 ~1 minecraft:oak_wall_sign[facing=west,waterlogged=false]{back_text:{color:\"black\",has_glowing_text:0b,messages:['{\"text\":\"\"}','{\"text\":\"\"}','{\"text\":\"\"}','{\"text\":\"\"}']},front_text:{color:\"black\",has_glowing_text:0b,messages:['{\"text\":\"\"}','{\"color\":\"dark_blue\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"give @s minecraft:panda_spawn_egg{EntityTag:{id:marker,Tags:[penguin-spawner]},display:{Name:\\'[{\\\\\"text\\\\\":\\\\\"Penguin Spawn Egg\\\\\",\\\\\"italic\\\\\":false}]\\'}}\"},\"text\":\"[GIVE EGG]\"}','{\"text\":\"\"}','{\"text\":\"\"}']},is_waxed:1b}"},{"id":"command_block_minecart","Command":"setblock ~0 ~-1 ~2 minecraft:oak_wall_sign[facing=west,waterlogged=false]{back_text:{color:\"black\",has_glowing_text:0b,messages:['{\"text\":\"\"}','{\"text\":\"\"}','{\"text\":\"\"}','{\"text\":\"\"}']},front_text:{color:\"black\",has_glowing_text:0b,messages:['{\"text\":\"Penguin\"}','{\"text\":\"Command box\"}','{\"text\":\"Made by\"}','{\"text\":\"TorchCraft\"}']},is_waxed:0b}"},{"id":"command_block_minecart","Command":"setblock ~0 ~-1 ~3 minecraft:oak_wall_sign[facing=west,waterlogged=false]{back_text:{color:\"black\",has_glowing_text:0b,messages:['{\"text\":\"\"}','{\"text\":\"\"}','{\"text\":\"\"}','{\"text\":\"\"}']},front_text:{color:\"black\",has_glowing_text:0b,messages:['{\"text\":\"\"}','{\"color\":\"dark_red\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"fill ~ ~-1 ~-3 ~7 ~1 ~1 air\"},\"text\":\"[UNINSTALL]\"}','{\"text\":\"\"}','{\"text\":\"\"}']},is_waxed:0b}"},{"id":"command_block_minecart","Command":"fill ~1 ~-2 ~0 ~7 ~0 ~4 minecraft:gray_concrete"},{"id":"command_block_minecart","Command":"setblock ~1 ~0 ~0 minecraft:white_concrete"},{"id":"command_block_minecart","Command":"setblock ~1 ~0 ~1 minecraft:blue_concrete"},{"id":"command_block_minecart","Command":"setblock ~1 ~0 ~3 minecraft:blue_concrete"},{"id":"command_block_minecart","Command":"setblock ~1 ~0 ~4 minecraft:white_concrete"},{"id":"command_block_minecart","Command":"fill ~1 ~-1 ~0 ~7 ~-1 ~4 minecraft:black_stained_glass"},{"id":"command_block_minecart","Command":"fill ~1 ~-2 ~1 ~1 ~-2 ~3 minecraft:yellow_concrete"},{"id":"command_block_minecart","Command":"setblock ~6 ~-1 ~3 minecraft:repeating_command_block[conditional=false,facing=west]{Command:'/execute as @e[type=item,nbt={Item:{id:\"minecraft:egg\"}}] at @s if entity @e[type=item,nbt={Item:{id:\"minecraft:snowball\"}},distance=..1] run tag @s add penguin-spawn-egg',CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~5 ~-1 ~3 minecraft:chain_command_block[conditional=false,facing=west]{Command:\"execute as @e[tag=penguin-spawn-egg] at @s run particle happy_villager ~ ~.5 ~ 0.2 0.2 0.2 5 10\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~4 ~-1 ~3 minecraft:chain_command_block[conditional=false,facing=west]{Command:'execute as @e[tag=penguin-spawn-egg] at @s run kill @e[type=item,nbt={Item:{id:\"minecraft:snowball\"}},distance=..1,limit=1]',CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~3 ~-1 ~3 minecraft:chain_command_block[conditional=false,facing=north]{Command:'execute as @e[tag=penguin-spawn-egg] run data merge entity @s {Item:{id:panda_spawn_egg,tag:{EntityTag:{id:marker,Tags:[penguin-spawner]},display:{Name:\"[{\\\\\"text\\\\\":\\\\\"Penguin Spawn Egg\\\\\",\\\\\"italic\\\\\":false}]\"}}}}',CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~2 ~-1 ~3 minecraft:chain_command_block[conditional=false,facing=west]{Command:\"SUBSCRIBE TO TORCHCRAFT\",CustomName:'{\"text\":\"@\"}',LastExecution:833690L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:0b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~2 ~-1 ~2 minecraft:chain_command_block[conditional=false,facing=south]{Command:\"execute as @e[tag=penguin] at @s if block ~ ~1 ~ minecraft:water on passengers run data modify entity @s Rotation[1] set value 90f\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~3 ~-1 ~2 minecraft:chain_command_block[conditional=false,facing=east]{Command:\"execute as @e[tag=penguin-spawn-egg] run tag @s remove penguin-spawn-egg\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~4 ~-1 ~2 minecraft:chain_command_block[conditional=false,facing=east]{Command:'execute as @e[type=minecraft:marker,tag=penguin-spawner] at @s run summon turtle ~ ~ ~ {\"active_effects\":[{\"id\":\"minecraft:invisibility\",\"duration\":999999f,\"show_particles\":false}],\"HandItems\":[{\"id\":\"cod\",\"Count\":1f}],\"HandDropChances\":[1f,1f],\"DeathLootTable\":\"minecraft:empty\",\"CustomName\":\"[{\\\\\"text\\\\\":\\\\\"Penguin\\\\\"}]\",\"Tags\":[\"penguin\"],\"Passengers\":[{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:black_concrete_powder\",\"Properties\":{}},\"transformation\":[0.8f,0f,0f,-0.4029f,0f,0.75f,0f,-0.556f,0f,0f,0.8f,-0.375f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:white_concrete_powder\",\"Properties\":{}},\"transformation\":[0.6f,0f,0f,-0.3029f,0f,0.6f,0f,-0.4935f,0f,0f,0.6f,-0.125f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:white_concrete_powder\",\"Properties\":{}},\"transformation\":[0.375f,0f,0f,-0.4129f,0f,0.375f,0f,0.319f,0f,0f,0.6f,-0.165f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:white_concrete_powder\",\"Properties\":{}},\"transformation\":[0.375f,0f,0f,0.0271f,0f,0.375f,0f,0.319f,0f,0f,0.6f,-0.165f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:yellow_concrete_powder\",\"Properties\":{}},\"transformation\":[0.1875f,0f,0f,-0.0904f,0f,0.1875f,0f,0.244f,0f,0f,0.1875f,0.375f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:blue_concrete_powder\",\"Properties\":{}},\"transformation\":[0.125f,0f,0f,0.1596f,0f,0.2f,0f,0.394f,0f,0f,0.6f,-0.155f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:blue_concrete_powder\",\"Properties\":{}},\"transformation\":[0.125f,0f,0f,-0.2779f,0f,0.2f,0f,0.394f,0f,0f,0.6f,-0.155f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:black_concrete_powder\",\"Properties\":{}},\"transformation\":[-0.0604f,-0.1618f,0f,-0.4029f,0.0162f,-0.6037f,0f,0.194f,0f,0f,0.5f,-0.25f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:black_concrete_powder\",\"Properties\":{}},\"transformation\":[-0.0604f,0.1618f,0f,0.4721f,-0.0162f,-0.6037f,0f,0.194f,0f,0f,0.5f,-0.25f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:orange_concrete_powder\",\"Properties\":{}},\"transformation\":[0.375f,0f,0f,-0.4029f,0f,0.125f,0f,-0.681f,0f,0f,0.6875f,-0.125f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:orange_concrete_powder\",\"Properties\":{}},\"transformation\":[0.375f,0f,0f,0.0346f,0f,0.125f,0f,-0.681f,0f,0f,0.6875f,-0.125f,0f,0f,0f,1f]},{\"id\":\"minecraft:block_display\",\"block_state\":{\"Name\":\"minecraft:black_concrete_powder\",\"Properties\":{}},\"transformation\":[0.79f,0f,0f,-0.3979f,0f,0.8125f,0f,-0.056f,0f,0f,0.6875f,-0.3125f,0f,0f,0f,1f]}],\"Silent\":false,Attributes:[{Name:\"generic.movement_speed\",Base:.9f}]}',CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~5 ~-1 ~2 minecraft:chain_command_block[conditional=false,facing=east]{Command:\"/kill @e[type=minecraft:marker,tag=penguin-spawner]\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,LastOutput:'{\"extra\":[{\"color\":\"red\",\"extra\":[{\"translate\":\"argument.entity.notfound.entity\"}],\"text\":\"\"}],\"text\":\"[15:18:56] \"}',SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~6 ~-1 ~2 minecraft:chain_command_block[conditional=false,facing=north]{Command:\"/execute as @e[tag=penguin] at @s on passengers run data modify entity @s Rotation[0] set from entity @e[distance=0,limit=1] Rotation[0]\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,LastOutput:'{\"extra\":[{\"translate\":\"commands.data.entity.modified\",\"with\":[{\"insertion\":\"56b89416-350f-44f6-9530-9dd009c38811\",\"hoverEvent\":{\"action\":\"show_entity\",\"contents\":{\"type\":\"minecraft:block_display\",\"id\":\"56b89416-350f-44f6-9530-9dd009c38811\",\"name\":{\"translate\":\"entity.minecraft.block_display\"}}},\"translate\":\"entity.minecraft.block_display\"}]}],\"text\":\"[15:18:56] \"}',SuccessCount:12,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~6 ~-1 ~1 minecraft:chain_command_block[conditional=false,facing=west]{Command:\"/execute as @e[tag=penguin] at @s on passengers run tag @s add penguin-body\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~5 ~-1 ~1 minecraft:chain_command_block[conditional=false,facing=west]{Command:\"/execute as @e[tag=penguin-body] run tag @s remove alive\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,LastOutput:'{\"extra\":[{\"translate\":\"commands.tag.remove.success.single\",\"with\":[\"alive\",{\"insertion\":\"56b89416-350f-44f6-9530-9dd009c38811\",\"hoverEvent\":{\"action\":\"show_entity\",\"contents\":{\"type\":\"minecraft:block_display\",\"id\":\"56b89416-350f-44f6-9530-9dd009c38811\",\"name\":{\"translate\":\"entity.minecraft.block_display\"}}},\"translate\":\"entity.minecraft.block_display\"}]}],\"text\":\"[15:18:56] \"}',SuccessCount:12,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~4 ~-1 ~1 minecraft:chain_command_block[conditional=false,facing=west]{Command:\"/execute as @e[tag=penguin] at @s on passengers run tag @s add alive\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,LastOutput:'{\"extra\":[{\"translate\":\"commands.tag.add.success.single\",\"with\":[\"alive\",{\"insertion\":\"56b89416-350f-44f6-9530-9dd009c38811\",\"hoverEvent\":{\"action\":\"show_entity\",\"contents\":{\"type\":\"minecraft:block_display\",\"id\":\"56b89416-350f-44f6-9530-9dd009c38811\",\"name\":{\"translate\":\"entity.minecraft.block_display\"}}},\"translate\":\"entity.minecraft.block_display\"}]}],\"text\":\"[15:18:56] \"}',SuccessCount:12,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~3 ~-1 ~1 minecraft:chain_command_block[conditional=false,facing=west]{Command:\"/execute as @e[tag=penguin-body,tag=!alive] run kill @s\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~2 ~-1 ~1 minecraft:chain_command_block[conditional=false,facing=south]{Command:\"execute as @e[tag=penguin] at @s unless block ~ ~1 ~ minecraft:water on passengers run data modify entity @s Rotation[1] set value 0f\",CustomName:'{\"text\":\"@\"}',LastExecution:856775L,SuccessCount:0,TrackOutput:1b,UpdateLastExecution:1b,auto:1b,conditionMet:1b,powered:0b}"},{"id":"command_block_minecart","Command":"setblock ~ ~1 ~ command_block{Command:\"fill ~ ~ ~ ~ ~-3 ~ air\",auto:1}"},{"id":"command_block_minecart","Command":"kill @e[type=command_block_minecart,distance=..1,tag=!debug]"}]}]}]}