How the character's numbers relate to them Like assault's is 81 81 (on his suit) looks like a sideways Tank's is 34 upsidedown it's he Sniper's is 1 He thinks he's number 1 Support's is 52 and that is opposite of each other. Gunner's is 98 (I have no idea why) and assassin's is 09 (no idea why) COME UP WITH YOUR OWN REASONS!
I honestly don't know but my guess would be that it's whatever number Chunkstyle put into the concept art