Sideswipe is the bratty teenager yet capable warrior of the new Transformers: Robots in Disguise animated TV show. his Legion Class figure sports a smidgen more articulation than the One-Step Changer but looks a ton better and will fit in anyone’s Legion/Cyberverse collection.
Armada Megatron is an homage to the big bad Decepticon leader from the Transformers: Armada series. We haven’t seen Megatron in this body in the IDW Comics which the Combiner Wars toy line is based on. It will be interesting to see if Megatron adopts this body style as Starscream did during Dark Cybertron or if this is just another repaint.