He grew up not knowing who he was. His egg was lost in time tell a young adventurer, named Steve, found him and raised him teaching his skills. When he became 14, his "Dad" left to go fishing but perished by a creeper. Enraged He took his Steve's sword and slaughtered every mob he saw and promised Steve that he will never let it happen to anyone again. He was going to the nether to slay the wither then the ender dragon then and only then he will be satisfied.