Nope, the first Jupiter piece was 'One Eyed' Jack Farrell, a Banson's Raiders piece that was a special piece (not in boosters or prize support). I think it was a mail-in for a magazine? Or did it come with MechAssault? I think the MA figure was the Merc Cougar.
And Wrangler was talking about the second novel, A Call to Arms, where a Republic Knight shows up in a Jupiter painted like the planet (even with the big red eye on the torso), that the main character eventually takes over piloting. But that wasn't even the first appearance in a novel, a Jupiter showed up in the first novel, but it didn't play a big role and it wasn't piloted by either of the Knights so it tends to get forgotten.
Yeah, it took me forever to hunt down Farrel's Mech (and never got to use it once I did! :( ), because I didn't have that magazine. I got my Cougar from Mechassault though (and it wasn't a bad one to use off and on, at least early on)
I think my issue is they did Build Banes when they designed the Jupiter. And really, its the same Chassis w/ endo & some hands added. So why design it at all? I know, I know, Clicky Tech.
Its really that 3068 date that gets me. Seems like it should have been a later intro date.
Actually, IIRC, the 1st Jupiter was being piloting by a Dragon's Fury pilot.
Something to consider though is what Bane was being built. The Bane-4, definitely, but a very different beast than the Jupiter's layout (in fact they make excellent teammates). But the previous models, based on the unseen artwork, may very well have been out of production by the time the Jupiter came along- which, in turn, might explain the Jupiter's being designed to begin with.
That's mere guesswork, I admit, but I honestly don't know if the previous Bane models were still being produced by the time the Jupiter, or even the Bane-4, were built.