Alex had been put into Mannequin Mark's body via means of dark magic, and was extremely annoyed at this. He had to hop around to move, and couldn't hug Ollie like he used to.

Ollie, though, was still the normal grey skinned amd blue torso-ed guy we know and love, and still shares love for Alex by ranting and stimming 24/7.

Mark/Alex: "Are you nearly done fixing that computer?"