Ikasas

Ikasas is Geo's first son. He is a small, scrawny, blue metric with deep green eyes. He died young while killed in a spike incident.

Unknown's Vengeance
Iksas doesn't formally appear, he isn't born yet. Geo does announce that Pinky is having his second child.

Geo the Movie
He is murdered by a spike and he is born pretty sure between this and Unknown's Vengeance.