Accused:
Static X
Static_X
(These two are the obvious ones!)
Perhaps others to look into (all joined on the same day, all from New Zealand):
Nickleback
Dry kill logic
Drowningpool
The accused are suspected of:
Being Multis
Both myself and Pixar have spoken to the person about possibly being a multi in different games below:
Game 10425143
Game 10425336
Games where the first player has played with the other three (not so obvious ones):
Game 10425804
Game 10425784
Game 10425713
Game 10425702
And others.
Comments: Static X certainly didn't seem like a new player when I played him/her, very quick and knew all the freestyle tricks like pressing the "b" button and refreshing to ensure you don't lose any troops.