Insane-azn: just felt like it had a catch to it, you know, like it's not quite a rhyme, but it's close enough. Oh and, azn is short for asian
Kisame: my favourite character in Naruto, also it seemed quite suitable with a blue username back when I was a mod
Notorious: derived from The Notorious B.I.G. (RIP) but it can be associated with a lot of other people, such as Tony Montana, Donquixote Doflamingo, Colonel Stinkmeaner etc.