The Superhero Resource Pack
The Superhero Resource Pack adds over 40 superhero suits to your game, all you have to do is rename your armor in an anvil to the name of the desired suit that you want to wear. The suits in the texture pack are from a variety of heroes ranging from the Avengers to the Justice league and even the Guardians of the Galaxy. All of the suits and item designs were made by Tihyo for the Superheroes Unlimited mod so credit goes to him, I used Optifine's CIT feature to make them accesible to more people without mods on the more current updates of Minecraft. Down below is a list of all the heroes currently included.

List of Marvel Heroes

Captain America	Antman	Starlord	Spidergwen	Deadpool
Iron Man	Wasp	Gamora	Spiderman 2099	Mr Fantastic
Thor	Scarlet Witch	Rocket	Spiderman Noir	Invisible Woman
Hulk	Quicksilver	Groot	Iron Spider	Human Torch
Hawkeye	Vision	Drax	Scarlet Spider	Thing
Black Widow	Nick Fury	Spiderman	Silk	Wolverine
Black Panther	Yondu	Spiderman Morales	Spiderwoman	Beast

List of DC Heroes

Superman	Flash	Hawkgirl	Robin
Batman	Green Lantern	Shazam	Batgirl
Wonder Woman	Martian Manhunter	Black Canary
Aquaman	Green Arrow	Supergirl

Instructions (Requires Optifine)
In order to get these textures you must rename your armor in an anvil. This will work with chainmail, iron, gold, diamond and netherite. You must replace the "iron", "gold" or whatever the name of the material is and replace it with the name of the desired hero. For example if I wanted a green lantern chestplate I would rename mine from "Iron Chestplate" to Green Lantern Chestplate". You need to use the spelling and spacing of the names in the tables above. If you have any questions feel free to leave a comment or message me on Reddit, my username is u/Vote_Crim_2020.