Rush

From Bob and George: The Wiki

Rush is a minor character in "Bob and George". Rush is Mega Man's robotic dog that debuted in Mega Man 3. Rush helps Mega Man by transforming into vehicles for Mega Man's use. Most notably the Rush Coil, which is the subject of the Rush's Useless Spring gag. Rush is easily offended by the fact that he is a majorly ignored character. He secretly has the ability to talk because Mega Man gave him the ability to talk after he had lost it in the third game. He can also see and hear George when he is intangible and lost in time, and therefore able to help him. He spends most of his time talking with Treble.