have a look in the other comics, there's a shot of that robot mode, which is the same height as ratchet, with a purple main torso and blue arm:
maybe they don't combine in movie or comic,but there is connection on the toy,that mean the toys actually combine.If they never combine from the basic design why waste money on those useless connection?
Haha, we'll have to wait for the Purple one, that's for sure. I wouldn't doubt it if they were meant to combine, than Hasbro just ditched the combination half way through production. Oh, and by the way, that Purple Motorcycle in Robot mode doesn't even have a 'blue arm'. That's just blue armor, as there's Purple underneath it. If you actually have the comic on you, you'll see that there's Blue armor on the Purple motorcycle's robot mode back on Page 9.
my 2 cents if the sisters get killed off early, dont combine and dont get enough lines in the moivie to show their personality and femininity they REALLY DROPPED THE BALL ON THEM. MAJOR DISSAPOINTMENT IN MY BOOK. why even include them in the movie? im hopin michael bay realizes this and does the sisters some justice
THe purple bike in this picture is first movie Arcee, who only appeared in the comics. The ROTF purple bike we have not heard name confirmation yet.