I don't mind the names, but I think I'd me more likely to NN a hypothetical
Mordecai 'Mordy' or something. (Though I'm really not much of a NN person, so if I were to have a little
Mordecai, that'd probably be almost exclusively what I'd call him.)
(And how the heck did I manage to not pick up on the whole "mor/mort/death" thing? I seriously forgot about it. And I'm a huge Potter fan, too. ;D)