Well, there's
Manny, but I'm not into that. What about Mano, or is that too close to
Manu? Or maybe
Mel. Or Nuel, but that looks awkward to me. Or E-Man! (nah.) Or Lem? Or maybe
Ema (ee-ma), but maybe the a ending is too feminine and
Ema looks a lot like
Emma.
So...
MannyMano
MelNuel
E-Man! (yes, the exclamation point is part of the nn.)
Lem
Ema
This is a toughie. I'm not feeling any of those, except maybe
Mel.