Skeletron is the 4th boss of Terraria. It seems to be the source of the curse of the Old Man, and seems to protect the Dungeon.

Tier: 8-A |At least High 5-A

Classification: Skeleton, Former Tyrant

Powers and Abilities: Superhuman physical characteristics, large size (Type 0), flight (True flight), intangibility (Phasing, can phase through all ties), berserk mode, magic, status effect inducement, homing attack with the assistance of summoning (Can summon small skulls that home in onto its opponent), statistics reduction (Can slow down enemies), regeneration negation (With Bleeding Effect), resistance to mind manipulation (Immune to Confused, which makes one do the opposite of what they intend), poison manipulation, bleeding

Attack Potency: Multi-City Block level (Can harm Post-Evil Bosses Terrarian)|At least Brown Dwarf level (Comparable to Dungeon Guardian)

Speed: At least Subsonic+ (Comparable to the Terrarian)|Subsonic+

Lifting Strength: Class 5 (Can push the Terrarian)|Class 5

Striking Strength: Multi-City Block level (Comparable to Attack Potency)|At least Brown Dwarf level (Comparable to Attack Potency)

Durability: Multi-City Block level (Can hits from the Post-Evil Bosses Terrarian)|At least Brown Dwarf level (Comparable to the Dungeon Guardian)

Stamina: Superhuman (Comparable to Terrarian)|Infinite (Comparable to the Dungeon Guardian)

Range: Extended Melee Range, Tens of Meters with cursed skulls

Standard Equipment: None notable

Intelligence: Animalistic (Constantly attacks it's enemy in various ways)|Instinctive (Charges towards the enemy indefinitely)

Weakness: Can only turn into Rage Mode while in day time, his defense decreases when his arms are destroyed.

Notable Attacks and Techniques:

•Arms: It's main method of attacking is slashing it's arms around. They are intangible, but they can be destroyed individually.

•Cursed Skulls: When Skeletron loses an arm, he starts shooting homing skulls.