In his first appearance in Tekken 2, Alex was introduced as the player two outfit of Roger. Being a velociraptor, he has green skin, a long tail and claws on his feet. The only piece of clothing he does wear are a pair of blue boxing gloves, like Roger but his are red.
In Tekken Tag Tournament, Alex returns as the player two outfit for Roger and he is identical to his previous appearance, but has been designed with improved graphics.
In Tekken Tag Tournament, Alex returns now with his own character slot, is identical to his previous appearance, but has been redesigned with greatly improved graphics.