Two more old OCs.
Right is an unnamed Mew-clone/Mewthree that came out not quite perfect. He was viewed as flawless until he got older, and more Mewtwo-like traits arose. The mark on his forehead was originally a 0 signifying his perfection, and it was later removed, leaving the scar you see there.
Left is his replacement, Mew-0. She is loosely inspired by a Porygon that I believe was featured only in the Japanese version of the anime, who had the 0 on its forehead. She is still perceived as perfect by her creators, though she is small and rather fragile.

Mew, Mewtwo, Pokemon, etc. © Nintendo
OCs, designs, artwork © Me!