This guy was (for me) the stand out of the three 2 packs.
I like that in robot mode the blue is relatively hidden and I love his torso mode (Menasor) head.
My only complaint about it was my Caliburst came with very loose legs but that was easily fixed.
On Huffer, The Arm pegs are attached by pins and the leg pegs are screws unless you're talking just the blue pieces on the end of the pegs, in which case they are pins.
You wont be able to remove the entire leg pegs though as they are required for Huffer as they become his heels and it would become impossible to stand on his own without them.