Was Xaaron the biggest remaining show/comic-only G1 character whose never had a toy? I'm trying to think of who's left now. Rack 'n' Ruin, I guess?
Arcee, Alpha Trion, the female Autobots and Devcon have gotten toys. Straxus, Scrourge and now Xaaron have gotten toys. (Though Scrounge is probably due for an update)
Who's the biggest G1 character left that still needs a toy?
There's a few that I can think of. Again, these are getting more obscure, but I don't feel like anything is off the table now:
The Last Autobot - Vector Prime is a pretty good stand in for him, but I'd like to see him get his own toy.
Trannis, the Decepticon leader before Megatron. He'd be a great remold of the Voyager Junkion toy, possibly in a two-pack with:
Sentinel Prime / U-Haul Robot, I'd love to see him made from Gamer Edition Optimus, now that we know that's a thing they can/will do.
Carnivac had a decent run in the comics, your basic Wolverine type of character. I can't believe we've never gotten him out of any of the various wolf transformers.
The majority of
Squadron X, the
DJD, or the
Mayhem Attack Squad, tons of good characters there.
And last but not least, we still need Titan Class
Spanner!