One of the most impressive cosplays at this year's Otakuthon in Montréal, Canada was Starcraft-related. But this time it wasn't a Kerrigan or other similar costume we usually see at conventions, but an incredibly well-made zerg Hydralisk.
Starcraft's iconic ranged, snake-like unit is anything but humanoid, so walking around in a costume like this would be a bit challenging. But the creator Dadboy got over all the difficulties and proved you don't need creep tumour to move fast as a zerg. An escalator will do fine.
Dadboy has a gallery over here, showing how this superb costume was made.