And apparently, only a few relatively-minor flaws to balance it all out. (It's possible for them to suffer empathetic overload, but I'm not sure if that was in an official story or not)

Semi-quick doodle of Iris and X-era Rock, drawn on the TMMN oekaki. Poor Rock's still a bit confused about this OTP.

Hey, remember the chakat? I drew some full art of her the other day.
Altaica (whose name is derived from the scientific name for the Siberian tiger) is about a head taller than RS-Rock (which I guess would make her terrifyingly massive, but even with evidence to the contrary, I just can't see RS-Rock as being that tall), and can carry up to two fully-armoured robots on her back, at the cost of slowing her down quite a bit.
As mentioned before, she loves exploring, but hates it when she comes up against the limits of her unusual form (and when she has to carry snarkers).
how do i tiger anatomy

I miss the Colour Balance option. (Photoshop 3.4 has it; Elements 7 doesn't)
"When Worlds Collide" won't be out 'til 2013 and it'll run through the normal issues of Archie-MM, StH, and Sonic Universe, but I'm still excited for this, 'cuz I love me some crossovers and Ian Flynn is a competent writer (Iron Dominion arc aside). The interaction between the casts is going to be interesting to witness.
Apparently there's going to be some sort of altercation between Megaman and Sonic early on; perhaps this pic takes place after they've gotten it sorted out, but not before Megaman trusts Sonic (or something). Don't worry, Mega; you won't have to sit in the spiky void forever.

Rock Lichblitz is merely a jerk; Rock Landon is...well...look at him.
This Megaman and Roll are from the dimension that Genesis fled from at warp speed. The higher-ups are homicidal maniacs, and the lower-downs are apathetic sociopaths; the few who weren't either ran for their lives (Genesis) or were "removed" (everyone else). The physical world reflects how awful its inhabitants are; in short, it's your worst grimdark nightmares made manifest.
Rock Landon a.k.a. Megaman is tasked with keeping it that way--he was the best sadist for the job, after all. He's aided by his sister Roll, who prefers knives over busters.
Their dimension is nice and all, but there's far more challenge in subjugating one that wasn't dead on arrival. You know, like the one their older brother now lives in.
Elements of Rock Landon's armour were borrowed from some early MMX1 concept art; Roll Landon was already designed. The pic itself required some editing in Elements 7, since the original Photoshop 3.4 version turned out to be WAY too dark.