Ever heard of Tower Defense X (aka TDX)?

This one's a Roblox Tower Defense Game that is considered a direct sequel to Tower Battles. It has a variety of bosses and enemies, some are based on Tower Battles enemies too.

Listing:

1. Plague Doctor and his Revived self (Easy & Elite Mode Boss)

2. Eradicator series: (Mk. 1/Mk. 1 C to Mk. IV), bosses for Intermediate mode (Erad. Mk. 1, Mk. 2 for Expert, Mk. 4 and Mk. 1-C for Endless Mode (along with their golden versions)

3. Event Bosses: Exo Santa and Toilet John Boss.

4. Greater-scope villains: Dr. Xenon and Calamity