Blast ended Skrewts, (mistakenly referred to as Bang ended Scoots by Rita Skeeta) are hybrid creatures resulting from a fire crab breeding with a manticore. They are rated XXXXX by the ministry of magic as being extremely dangerous on the account that they were bred from another XXXXX creature, the Manticore. Hagrid created them by breeding fire crabs with manticores. This is a violation of magical law on creature breeding. He was sent to Azkaban as a result. In Harry Potter's Quest, Harry and Oscar have to fight a blast ended Skrewt.