I don't recall Scoop appearing in G2 at all. He did appear in the G1 comics as a member of Emirate Xaaron's Autobot resistance (which also included the other Autobot Double-Targetmasters, Autobot Classic Pretenders and Micromaster Rescue Patrol).

Doubledealer and Doubleclouder are entirely different characters. Doubledealer is a Decepticon Powermaster who is binary bonded to the Nebulans Knok and Skar (both of whom are unaware of Doubledealer's side-switching nature - he keeps it a secret even from his own Nebulan partners!). Doubleclouder on the other hand is a human who is paired with a lifeless Transtector. The "Knok" and "Skar" forms are actually variant armours worn by the (Double)Clouder depending on if he's in his Autobot or Decepticon guise. The Doubleclouder Transtector later gained sentience thanks to Devil Z and the human Clouder (who'd previously defected to the Autobots) joined the now-defected Decepticon Headmaster Juniors in aiding the Autobots. There are also distinct colour differences between Doubledealer and Doubleclouder, although oddly enough Doubleclouder's show colours are the same as Doubledealer's (which suggests that the show model must've been drawn up before Takara decided on changing Doubleclouder's colours from his Hasbro counterpart.