He looks like 16 year old Big Chill but his eyes are blue and wears the Modelatrix symbol on his belt.
He can shoot ice at everything and freeze stuff.
He can become intangible.
He can fly.
Intangibility will be canceled out for other Intangible life forms.
Chillax's intangibility is consciously used, not reflexively, which means he can't use his intangibility if he is caught off guard.