>>24578569>stupid tongueIt's a frog. Frogs have long tongues. There's nothing wrong with having it be a prominent aspect of it. Actually, the fact that they could conjure up the usage of tongue as a means of expanding the ninja motif in itself is one of the most clever and risky design decisions i've seen in the past years. It also presents the added bonus of offering the design a much more interesting eye appeal via color contrasts that make sense yet use uncommon tints of it.
>is just a clusterfuck of polygonal shapesLiterally anything could be simplified to polygonal shapes. If you want to criticize its shape, just use the words "angular" and "jagged" instead of copypasting retarded arguments just because you think they favor you.
The only thing that actually feels tacked on in Greninja is the tail-like thing it has. Sure, you can argue >MUH AERODYNAMICS as much as you want, but it feels slightly uncanny on a frog pokemon, and i'm pretty sure the spearheaded shape Greninja's head has, along with the spoiler horns makes it aerodynamic in itself.
Every other part of its design is near-perfectly executed.