Board Thread:Questions and Answers/@comment-26187561-20150422194439/@comment-24152851-20150423101645

Well Gravattack/Ultimate Gravattack can control gravity itself, which I suspect is a similar way to how Graviton from Marvel comics does it, by concentrating or lessening gravitons around an object. Considering he can increase or reduce gravity at will, size does not really matter, because he can simply reduce the gravity of anything even if it's planetary sized. So my answer is yes, I think he can.