The Builder Monkey is a quest NPC located in the Sunken Wilds biome in Abyss who offers a three-quest chain that unlocks access to the King Monkey. Completing the Builder Monkey questline is essential for endgame progression because it builds a bridge that lets you reach the King Monkey’s area, which ultimately grants access to the Wild Gun and Wild Tube. This guide covers where to find the Builder Monkey, all quest objectives, and the rewards you receive for completing each quest.

Where to Find Builder Monkey in Abyss Roblox
The Builder Monkey is located inside the safety dome cave in Sunken Wilds. To reach Sunken Wilds, first teleport to Spirit Roots, then head east from there. Once you arrive at Sunken Wilds, enter the safety dome and you’ll find the Builder Monkey standing inside near the teleporter.

Best Equipment for Builder Monkey Quests
Before starting the Builder Monkey quests, make sure you have proper fishing equipment. The recommended setup depends on your current progression level:
- If you already have Ruined equipment: Use the Ruined Tube and Ruined Gun purchased from the Lightkeeper in Angler Cave. These are slightly better than the Banana alternatives and will make fishing more efficient.
- If you don’t have Ruined equipment: Purchase the Banana Tube and Banana Gun from the shop located beside the Builder Monkey in Sunken Wilds. These have similar stats and price range to Ruined equipment and are sufficient for completing all Builder Monkey quests.
All Builder Monkey Quests
The Builder Monkey offers three progressive quests that must be completed in order. Each quest requires catching specific fish, mutations, and sometimes collecting items found while fishing. Here’s the complete breakdown:
| Quest | Objectives | Rewards |
|---|---|---|
| Builder Monkey Quest 1 | • Catch 8 Discus • Catch 2 Banana-Mutated Fish | • $4,000 • 15 Star Shards • 3 Small Oxygen Pods |
| Builder Monkey Quest 2 | • Catch 6 Trout • Catch 6 Discus • Catch 3 Banana-Mutated Fish | • $7,000 • 25 Star Shards • 2 Basic Oxygen Pods • 1 Drop Luck Potion |
| Builder Monkey Quest 3 | • Catch 5 Tambaqui • Catch 8 Trout • Bring 2 Bananas • Catch 1 Grounded-Mutated Fish | • $11,500 • 35 Star Shards • 2 Advanced Oxygen Pods • 1 XP Potion Unlocks bridge to King Monkey |
Quest 1 Tips
The first quest is straightforward and introduces you to fishing in Sunken Wilds. Discus are common fish in the area and spawn frequently, so catching eight should take minimal time. Banana-Mutated Fish are recognizable by their yellowish coloration and particles. Use your radar to track down mutated fish – when you see a fish with the yellow/banana mutation, that’s what you’re looking for. Only two are required, so this quest serves as a gentle introduction to the mutation system.
Quest 2 Tips
Quest 2 expands the requirements by adding Trout to the mix. Trout are just as common as Discus in Sunken Wilds and spawn in the same general areas, so finding them won’t be difficult. You’ll need six of each fish type plus three Banana-Mutated Fish this time.
Quest 3 Tips
Tambaqui is an uncommon fish type in Sunken Wilds, and you need five of them. You’ll also need eight Trout, making this the most fishing-intensive quest so far. The two Bananas required are special items you find while fishing – they appear in Sunken Wilds. Keep fishing and you’ll eventually collect them.
That’s all you need to know about how to unlock the bridge to King Monket in Abyss!