The current image is good, but the trope's supposed to be about going more and more monstrous until you hit a line, at which point you become more humanoid. With Cell, he starts as a monster and gradually becomes more human. There's never a line; he's always going more human-like.
Conversely, here's Frieza◊, who, from right to left, starts somewhat monster-like, gets more beastly with each form, before finally becoming a hornless humanoid.
The current image is good, but the trope's supposed to be about going more and more monstrous until you hit a line, at which point you become more humanoid. With Cell, he starts as a monster and gradually becomes more human. There's never a line; he's always going more human-like.
Conversely, here's Frieza
◊, who, from right to left, starts somewhat monster-like, gets more beastly with each form, before finally becoming a hornless humanoid.