Each of these different dopplegangers would have a slightly different outlook, different armor, and some sort of distinguishing characteristic to tell him apart from the other clones and the Prime Hayate. Suggestions as follows.
1: Professional, cynical and driven. Closest thing to a military mind in the bunch. Armor looks like Leon the Professional, powers manifest in slightly less whimsical ways ie dinner knife becomes hunting/combat knife.
Distinguishing Characteristic: Dark round sunglasses.
2: Smarmy, dickish, and dangerously Genre Savvy. Basically the bastard child of the MST guy from the threads and a Malkavian. Not any more or less crazy than the rest of the collective, he’s mostly just decided that if the world at large doesn't have to make sense, neither does he. Armor looks more or less like Hayate’s normal street cloths (the jeans/shirt/coat combo from the first chapter of the manga, for those who wanna go look) plus a pair of cardboard 3D glasses.
Distinguishing Characteristic: Beanie hat.
3: Hayate’s inquisitive side. Mute, easily distracted. Basically always absorbing new info like a sponge. Lacks the sound judgement, paranoia, and observational powers of the rest of Hayate’s aspects. When not busy doing something, will gravitate to the nearest source of knowledge: an internet terminal, a library, Ryuu’s bar, etc. Armor manifests as a lab coat over whatever he happened to be at the time.
Distinguishing Characteristic: Reading glasses.
>The original post with these three offered to make more if these were liked and/or it was needed/wanted.
I kinda liked it. But I can see why opinions might differ.