Teams, you say. Would you mind a 1/12 scale contribution?
Let's say my local branch of Black Skulls Death Brigade jumped across the multiverse to heed your call (or maybe the call found them, without asking).
Their names are classified of course. I'm not even sure they know each other's names. But they have aliases instead.
Folium is an infiltration master and a sniper. His normal modus operandi involves taking additional effort to eliminate all traces (and witnesses) of whatever operation he is currently executing, even if this is not among said operation's objectives. Because of this, friends often call him Folly - or rather the only people who can call him that, and remain alive afterwards, are his friends.
Nix specializes in all-out assault and heavy guns. Preferably heavy guns mounted on heavy machinery. He also admins Linux servers in his spare time.
Ignis, contrary to his
name alias, is quite reluctant to draw guns most of the time and prefers to consider all options and make an informed decision before acting (or maybe he doesn't like wasting ammo). One of common results of his contemplations is cutting his way through enemies with a katana. Though when he does draw his pistols all hell breaks loose as he is a very capable gunslinger.
One more thing to note - these guys are not paladins in shining armor or paragons of justice or whatever. Which is probably expected given the team name. Their methods reflect that, too.