Aqua Mind AppendixG

Monster	Level	Drop chance
Splinter Rex	40	2.4%
Rook Snatcher	40	2.4%
WarBeast Kin	42	2.4%
Vice Bloc Lunker	42	2.4%
Frenzy Ratmoth	41	2.4%
Argol Drone	43	2.4%
Freak Vafer Niffer	43	2.4%
Argol Wasp	45	2.4%
Great Lava	47	2.4%
Fierce Grumble	49	2.4%
Twizer Rex	45	2.4%
Lizard Khan	45	2.4%
GafMale	45	2.4%
RashVafer Luther	49	2.4%
King Crook	47	2.4%
Rex Cannival	45	2.4%
Blood Queen Crook	49	2.4%
Blood King Twizer	47	2.4%
Brutal Rex	50	2.4%
Heavy Mit Clod	49	2.4%
Blood Crawler Rex	50	2.4%
Blood Vafer Rex	50	2.4%
Fierce Snatcher Rex	50	2.4%
Heavy Anabola	49	2.4%
Brath	55	2.4%
Caliana Princess	50	1.2%
Belphegor	60	1.2%
SpyfusDoesn't spawn	60	1.2%
XelnakanDoesn't spawn	60	1.2%
EvilEyetotumDoesn't spawn	46	1.2%

Base drop chance per kill on a standard 2.2.3.2 server. Private servers multiply this by their drop rate. Monsters marked “doesn't spawn” are in the server files but never appear in the world.