Battling McGnat is Popeye's boxing coach who made his first appearance in the 1933 comic strip storyline "Popeye Fights Bullo Oxheart". He usually helps Popeye in his boxing matches by preparing him and giving him tips during fights.
Creation and development in Thimble Theatre
Battling McGnat would re-appear in IDW Publishing's revival of the Popeye comics in 2012. He was featured in the third issue, where he attended the boxing match between J. Wellington Wimpy and The Phantom Crusher, and later on discussed the result of the match with Rough House.
Popeye Fights Bullo Oxheart