There's 20 main bossfights and that's the 19th one

The craziest part of Galactic Groove that's really gonna set it apart from the original plntdb game is that the second to last bossfight is where Zap has to VIOLENTLY SHRED AN ENTIRE ARMY OF AREA51 GUARDS APART; I mean Zap's crashout was kinda valid since the Area51 guards were tryna harm his friends