Cell was created by Dr.Gero and evolves like an insect.First Cell is smehwat like a grasshopper wih no threat.He came to the future by the Capsule Trunks came in but earlier.Second, he started walking upright and was able to take energy from anything.he wips out the entire city.The he becomes semi-complete and stronger and faster unlike most fighters.The Incomplete Cell absorbs 18 and bcome complete. He almost kills Goku but it was a good fight.Because Goku nearly kills Cell with an Instant Transmission + a Kamehameha but Cell absorbed some of piccolo's regenration cels and just regernerates his whole upper body...