Ken is a former antagonist, turned anti-heroic presence, in Disney/Pixar's feature film Toy Story 3.
A sentient doll modeled after the eponymous toy from Barbie's toy line, Ken appeared as a former underling of the twisted bear Lotso before he would side with Barbie and Woody to oppose his authoritanian rule.
He appears in the second Disney Heroes vs. Villains as among Lotso's henchmen, though it is unknown if he would remain on his side in the grand scheme of things.