The spider-snake hybrid is a creature that appears in "A Glitch is a Glitch." Jake accidentally creates it when he merges a normal spider and snake in the universal source code. It later attacks the immobilized Ice King.
The creature is an amalgam of the appearances of a rattle-snake and spider. It has only six legs (rather than eight) that look like green snakes, and a yellowish thorax.
- Finn draws Ice King covered in snakes and spiders on a computer program earlier in the episode.