Is this a question? Of course T3! GO-TO is nothing without his assasins! He can float and grab blaster pistol that's all(allright maybe he can repair some things).T3 is like an ancient R2-D2. Not that ancient but ancient. So I voted for T3 as anyone else who commented
"I've barely eaten anything for many decades now. It feels like my stomach shriveled into my back........though i don't have a stomach or back because i'm a skeleton! Yohohohoho! SKULL JOKE!"
"My eyes have never seen such a pretty woman! But i'm a skeleton so my eyes don't see much."