After defeating the Enderdragon, now your exploration is riddled with endermen, shulkers, a precarious abyss, and...nothing else? The Nether has more dangers than this end-game dimension! Here's a mob that could fill that gap.
• Enderlisk: a dark, monitor lizard-like mob that spawns on the outer islands. A smaller & more common relative of the enderdragon boss, it could be 6 blocks long (the tail being half of its body length) . Starting neutral, if the player attacks it or comes too close for comfort, the mob will strike with two attacks: a tail spin, and spitting purple spitballs. When idle, the enderlisk will prefer to climb and sit in chorus fruit trees, making the harvest of chorus fruit not as safe as it seems in the End. Has a highly rare drop chance of enderlisk spit.
- Enderlisk Spit: can be placed on the ground, but quickly deteriorates and can not be picked back up. However, if ignited with flint & steel or by other means, the spit puddle will burst into a 1x3 cloud of dragon breath for harvest with a bottle. Also, if an enderlisk's spitball doesn't hit the player or another mob/entity, it will become a puddle upon contact with a block.