Board Thread:General Discussion/@comment-26965399-20160815203824/@comment-23.122.217.39-20160828144516

The word for hammer is ハンマー. The syllable stretch at the end is important because it signifies the "r". So it would not be Hanmer.

You could argue that Hanma's name is meant to be read as Hamma, but then that sounds like even less of a name than Hanma.