Quote Originally Posted by kurdt_the_goat View Post
What's the extra piece included with Frenzy & Rumble?
I think they're meant to be the propellers that Frenzy* used to quickly get out of the river at Sherman Dam after fighting Hound in "More Than Meets The Eye Part 2."
http://www.youtube.com/watch?feature...Yz_d4dA#t=756s

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*In Japanese continuity (since we're discussing a Japanese toy), Rumble in Anglophone continuity.