Mr. Bro Bro Is a fusion between Broly and Mr. PoPo and the strongest charcter in scary godmother by far.
When fighting Jimmy Brando Mr. Popo reliased his true power. Fearing he would be as strong as Shrek Mr. Popo needed to catch up to his two rivals so he forcefully fused with Broly. Once fused Popo used his dominance to retain control of the form Broly died into his subconscious. Now he is searching for someone whos 0.000000007% as strong as him.