Mechdusa - Official Terraria Wiki

Mechdusa is an early Hardmode boss exclusive to Get fixed boi worlds. Technically, it is not considered a separate boss, but is merely a combination of all three mechanical bosses. It resembles a large serpentine-like creature composed of the three bosses: The Destroyer's head is attached to the Skeletron Prime's head, and The Twins are individually connected via tendrils to Skeletron Prime's eye sockets instead of to each other. There are also two extra Probes attached to The Destroyer's head.

mechdusa : r/Terraria

im not cthulhu´s brother b-baka! : r/Terraria

Exo Mechs - Official Calamity Mod Wiki

Terraria 1.4.4 Mechdusa Boss Fight Master Mode [Read the pinned

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Mechanical Bosses, Villains Wiki

What bosses am I missing? : r/Terraria

Ocram - Official Terraria Wiki

Critters - Official Terraria Wiki

Steam Workshop::All Alternate Boss, Mini-Boss and Invasion Pack