System Wyverns 2.8.9
This addon adds a wide variety of wyverns that will appear in your survival world. These are hostile and you can tame them when they are babies. They have 3 types of attacks.

Add-ons with Bosses for Minecraft. Test your strength in battles against powerful bosses, each with unique abilities and tactics. Make your survival in Minecraft even more thrilling with new challenges and epic fights.
This addon adds a wide variety of wyverns that will appear in your survival world. These are hostile and you can tame them when they are babies. They have 3 types of attacks.
A portal to another universe was opened, an apocalyptic world, from which Cordyceps came out. The fungal infection that destroyed that world has now also devastated the entire world.
A large vanilla-styled addon that adds an assortment of blocks, mobs, and features with a variaty of uses.
The Irritator Dweller introduces a massive, challenging mob to Minecraft Bedrock that chases players and adds new excitement to your world.
Cataclysm Ignis introduces a powerful new boss with unique mechanics and a challenging fighting system to your Minecraft world.
Nico's More Dungeon is an add-on will bring new and large dungeon that generates around the world. Dungeons are filled with dangerous mobs, chest loots, and each dungeon is guarded by a boss!
Shin Herobrine introduces a terrifying new mob to Minecraft. Activate all experimental features before installing and challenge yourself to survive his wrath.
The Bloody Mist is a mysterious boss mob inspired by corrupted files, bringing a haunting new challenge to your Minecraft world.
Adds new creatures like the Bath, Locust, and Follower to Minecraft, each with unique abilities and stats. Creatures credited to @itzhaba and @ishak.
Boss mods bring a whole new level of excitement to Minecraft, introducing formidable opponents with unique mechanics. These battles require strategic thinking, specialized equipment, and teamwork.
From massive health pools to devastating abilities, bosses in these mods are designed to push players to their limits. Each encounter feels epic, rewarding you with rare loot, achievements, or access to new areas.