Scolex

Scolex is a boss that can appear in the Womb and the Scarred Womb. Contents • 1 Behavior • 2 Champion Versions • 3 Gallery • 4 Notes • 5 Trivia • 6 Bugs

Scolex is only vulnerable in his blinking tail segment. He burrows into the ground before performing the following attacks:

• Jumps out of the ground towards Isaac, burrowing back into the ground at the end of the jump.
• If Scolex is hit by an explosion while mid-air, he will be deflected backwards.
• Partially emerges head-first and shoots out a cluster of projectiles towards Isaac, similar to Monstro, but with a wider spread.
• After performing this attack, Scolex will always jump out of the same spot he entered.
• Partially emerges tail-first and fires cluster of 3 red Ipecac shots towards Isaac.
• After performing this attack, Scolex will always jump out of the same spot he entered. Scolex deals a whole heart of contact damage.

Black: Scolex is 15% larger, slower, and has 25% more HP (375).

• Sometimes, several Lumps, Guts, Para-Bites, or Round Worms can accompany Scolex at the start of the battle.

• Scolex appeared in the original The Binding of Isaac.
• Scolex is the only Boss to have lost access to a Champion variant in an update. Specifically in Repentance, where his dark grey counterpart is inaccessible unless using Console commands to summon it.
• Scolex can be considered an older or younger version of Pin, but not a posthumous one (that title goes to The Frail).
• A scolex is the name of the head of a tapeworm.
• Compared to the original Binding of Isaac, Scolex's head and tail attacks are swapped.
• Scolex bears some resemblance to a mythological Mongolian Death Worm, which are described as long, scaly, and blood red. It also raises half its body out of the sand and covers its prey with a lethal acidic substance, which is somewhat similar to Scolex's head attack.