

The Colossal Titan is pretty big, but he lacks the power that is needed to take Regice down for the count. Regice may not be quite as big as the Colossal Titan, but his ice abilities can turn the tide of battle in an instant. He has a large array of attacks up his sleeve and most of them would quickly KO the Colossal Titan. He would likely choose the classic ice beam to freeze the Colossal Titan as he finishes him off with another blast. Regice wins.

