Bat Visage Bobber
Drops from Muckribbon. To be able to see the you need to complete 4 quests given by first 1. 2.
The 
Bat Visage Bobber is a fishing toy obtained by defeating Muckribbon in Revendreth after interacting with the Forgotten Angler's Rod.
Guide awaiting review
Complete prerequisite quests
Complete the four quests given by Rendle: It's a Dirty Job, Dredger Duty, We're Gonna Need a Bigger Dredger, and Running a Muck. This unlocks access to the Forgotten Angler's Rod.
Locate the Angler's Rod
Travel to the Dredgewood in Revendreth and find the Forgotten Angler's Rod at 73.62, 75.43. Look for a tree on an island surrounded by water accessible via the elevator from Pridefall Hamlet.
Interact and defeat Muckribbon
Click on the Forgotten Angler's Rod at 73.62, 75.43 in Revendreth to summon Muckribbon. Defeat the mob and loot the Bat Visage Bobber from its body.
Tips
Muckribbon has a 75% chance to dodge attacks, so combat may take longer than expected.
The spawn appears to be on a timer; if Muckribbon doesn't appear immediately, wait a moment before trying again.
See the video guides for a visual walkthrough of the exact location and route.
