C's

Cell
Race: Android
Series: DBZ, DBGT
Sagas: Android, Cell, Super 17
An evil being in his own way, Cell is the fiercest of the androids. Cell was the master creation of Dr. Gero. Cell has cells of all the strongest fighters in the universe. Cell has three forms total. The three being: ordinary Cell, mutated Cell, and perfect Cell. Cell really doesn’t have a ton of evil in him unlike some villians. This shows in how Cell wants to make a “game” or “challenge” out of everything. An example being that he wanted Gohan to go Super Saiya-Jin 2, because he wanted a good match. Cell meets his match though, when Gohan destroys him with a Super Kame-Hame-Ha. In Dragon Ball GT, Cell comes out of hell along with Freeza and Android #17, but he is defeated by Pikehan.

Chaozu
Race: Unknown
Series: DB, DBZ, DBGT
Sagas: All
The size of Chaozu does not stop him from trying to be strong. Chaozu is the smallest of all the Z Warriors. He and Tenshinhan are linked telepathically. Chaozu competes in everything the others do, but he does not succeed much. Chaozu is the weakest of all the Z Warriors.

Chi-Chi
Race: Human
Series: DB, DBZ, DBGT
Sagas: All
“The woman stronger than any Super Saiya-Jin, Chi Chi” in the words of Kame-Sennin. Why would a woman have this title? She is very obsessive of her two sons, Gohan and Goten, and, she also has worries for her husband Goku way too much. She is in almost total control of what these three men/boys do. Chi-Chi does whatever possible to keep her family near to her.