The two Autobot Recordiguys in the eHobby Shattered Glass set are Rewind and Ramhorn, and both borrow their color schemes from Rumbles.  SG Rewind is patterned after the unreleased G2 Go-Bot Rumble and SG Ramhorn is patterned after the comics-only movie universe Rumble (who was a little blue rhino partner for Soundwave).

SG Rewind is stalwart in its attempt to homage G2 Rumble.  In addition to the base colors, there are a trio of stickers which seal the deal.  Two of them go on his legs and mimic the sculpted shapes on G2 Rumble's legs.  The final one says "VINNY'S MOTORS" and goes on Rewind's back.  That's going the extra mile, and I appreciate it.

SG Ramhorn is in blue with some gray accents to make him look more movie-segmentedy, plus he comes with a sticker that gives him more chunks of movie innards striped down his midsection.

Since these are new guys to the set and to everywhere, they get their personalities here.  Rewind is, uh, a hunter/tracker guy who's gathering Cybertronic wildlife so SG Blaster can have a bunch of animal dudefriends like Sir Soundwave.  Ramhorn is one of these Cybertronic wildlives.  I don't think either are particularly very SGy in concept, but whatcha gonna do.  I think SG Rewind should be like the dude from Memento, personally.  It feels like a better twist on who normal Rewind is.  And Ramhorn... I dunno.  I do like that he's given "Chaos Generator cannons" that seriously fire random, unpredictable things.  That could be a source of fun.   Like, *blam* rubber chickens!  *blam* confetti!  *blam* actual bullets!  *blam* Liam Neeson!

Colors- and homage-wise I definitely can't complain.  Getting their appearances from G2 Rumble and Movie Rumble is an interesting choice.