Characters from Left to Right are:

Lt.Jack Wilson, whom Vinny refers to as "Captain America" or "The Most Boring Man Alive". During the campaign this came from he seriously wrote down "Uncle Sam" in his Deity slot on his character sheet.

Vincent "Little Vinny", Italian Mafia Minotaur. Professes to be a Lawyer.

Haj, Greaser, thief, jack of all trades. Serves as the group's engineer.

Professor Dean Johnson, fancier of fedoras(he actually picked up a minor artifact that regenerates fedoras when he loses them).