List of Bosses

Normal Bowser(Bowser 1)
There are several ways to reach them. And only can be found in Bowser in the Dark World (Shoshinkai).

Powerful Bowser(Bowser 2)
Can teleport and jump, appears in Bowser in the Bully Battlefield, and one other stage, in the other stage though, you can find a key by touching some sparkles in a box. In Bowser in the Bully Battlefield, bullys with 2 horns like in vanilla SM64 will interfere, and there is lava here and there. In the other one, there is no lava but there is little space to attack bowser while there is an checkered floor.

Final Bowser(Bowser 3)
Has the rainbow effect. Much harder, and takes 3 hits to kill, can only be found in Randomized Realm, where he drops a Final Star, which triggers the ending cutscene, but you'll die in the cutscene.

King Bob-Omb
Appears in a few places, but is quite easy, is the same as in vanilla SM64.

Wiggler
Appears in 1 or 2 places, and is the same as in vanilla SM64.

Chief Chilly
Appears in 1 or 2 places, and is the same as in vanilla SM64.

Eyerok
Appears in 1 place, maybe 2, and is the same as in vanilla SM64.

Big Eye
Run in circles around them to defeat them, appears in Lavish Lava Mountain, and drops a star when defeated.

Big Bully(beta)
Appears in Fire Bubble, hit them into the lava for a star.