Official Fan-Submitted Content: Those who paid for it through the game's crowd-funding campaign will be put into the game in sprite form. A small few people also paid for the opportunity to become director of the studio for one day. Winners of the fan art contest that created original material will have it featured in the game in some fashion.
The Baz appears as a secret boss, as do Reize Seatlan, Phantom Striker, and Mr. Hat. The fifth director for a day designed the Liquid Samurai, a standard enemy that appears late in the game.
Although not from any one source, multiple game mechanics were either suggested or altered due to fan input through the design hang-outs, which were exclusive to anyone who donated $75 or above.