From the left:
– white hair? This is the 13th Man, and he has appeared but never been mentioned.
– Hooded: Jackdraw II
– front left: Tilt & wife … I think: Correct!
– blue? armour: former member of the squadron, don’t know the name (seen at Symphony’s court marshall): Sky Shark
– gray hair: John Underhall
– facing back with brown pony tail: Silver Wing
– front next to Tilt: Utopian & Lewis
– red costume: Charge
– green costume back, bald: not sure who this is (it’s a secret, so you can’t have guessed this one)
– yellow costume: former member of the squadron, don’t know her name (seen at Symphony’s court marshall): Ms Meme
– in wheelchair: Iron Claw III
– gray / brown (gold?) costume : former member of squadron, don’t know the name (last seen attacking demon Synn I think): Correct, its the Candle III
– bald guy: not sure who this is: You can’t of known, but this is Quadrophonics longtime lab partner and friend
– Johnny Saturn II
– behind Saturn: She was Zietgeist, last seen fightning Synn
– green costume: Stardust
– far back in black, next to the person behind Saturn: Dr. Nagachi
– white/silver costume: former member of the squadron, don’t know the name (last seen attacking demon Synn I think): Deco, lost his arm fighting Synn
– wheelchair: Captain Barometer
– transparent guy: Ghost of Benedetti
– next to ghost: Torch Song (did she get a hair cut?)
– front (behind Quadraphonic’s photo): Gauge
– big guy: former member of the squadron, don’t know the name (seen at Symphony’s court marshall): Pummel Horse, a Djinni
– next to Gauge: Triops
– right most: Hotfoot

You got all of them that you could know, even pretty darn rare ones. The one’s you had never seen before, you didn’t, of course.

The 13th Man has appeared a couple times before, always turned away, usually in a trench coat. He matters not in the next story arc, but not this one..

From the left:
– white hair?: is that the back of Hyperspace?
– Hooded: Jackdraw II
– front left: Tilt & wife … I think
– blue? armour: former member of the squadron, don’t know the name (seen at Symphony’s court marshall)
– gray hair: John Underhall?
– facing back with brown pony tail: Silver Wing?
– front next to Tilt: Utopian & Lewis
– red costume: Charge
– green costume back, bald: not sure who this is
– yellow costume: former member of the squadron, don’t know her name (seen at Symphony’s court marshall)
– in wheelchair: Iron Claw III?
– gray / brown (gold?) costume : former member of squadron, don’t know the name (last seen attacking demon Synn I think)
– bald guy: not sure who this is
– Johnny Saturn II
– behind Saturn: not sure who this is
– green costume: Stardust
– far back in black, next to the person behind Saturn: Dr. Nagachi
– white/silver costume: former member of the squadron, don’t know the name (last seen attacking demon Synn I think)
– wheelchair: Captain Barometer
– transparent guy: Ghost of Benedetti
– next to ghost: Torch Song (did she get a hair cut?)
– front (behind Quadraphonic’s photo): Gauge
– big guy: former member of the squadron, don’t know the name (seen at Symphony’s court marshall)
– next to Gauge: Triops
– right most: Hotfoot?

It is true, all of the above are established characters within in the continuity. I’ll get a who’s who up shortly.

Didn’t you mention before that all of these heroes we see in the panels, even the random background filler ones all have names & backgrounds?