Megabonk Bosses: Spooky Steve, Big Bob, Final Boss & Stage Bosses

Updated October 22, 2026 · Patch covered: Megabonk v1.0.69 (Feb 4, 2026), still the latest on Steam as of Oct 22, 2026

All Megabonk bosses by map

Names agree across MegabonkWiki.net and player guides. We do not list boss HP numbers: the figures we found online were not sourced, and HP scales with your Difficulty.

When bosses spawn (Forest and Desert)

• Stage timers are about 10, 9 and 8 minutes. A boss spawns at 7:00 and 2:00 left, and again when you activate the portal.
• Swarms come at 7:00 and 3:00. When the timer hits zero the endless Final Swarm of flying enemies starts and keeps getting stronger.
• Boss Curse statues add one more boss for the rest of that stage; the count resets on the next stage.
• Beating a boss (except the last) drops a free chest that pulls in all XP on the map.
• Can't find the boss portal? Follow the red mist; the gate is within one or two tiles of it, and once seen it stays on the minimap as a red diamond.

How the Megabonk final boss works

1. Activate the stage 3 portal. You are moved to a small arena; you have 10 minutes.
2. Phase 1: you keep only your starting weapon. Since v1.0.4 the boss returns one weapon per phase.
3. After enough damage the boss turns invulnerable (and heals slightly). Charge the three pylons to make it vulnerable again. Lifesteal does not work while it is invulnerable, so bring HP Regen or Armor.
4. Repeat until phase 3, where you have your full kit. Watch the orbs: blue ones freeze you for 1 second (3 seconds before v1.0.4).

The final-boss guide we checked says: run circles around the boss while it is vulnerable, use multi-jumps to reach pylons, and pull the boss away from a pylon before you charge it. Its build (Wireless Dagger + starter, Quantity/Armor/Cooldown tomes) is one of the presets in the build planner.

Big Bob (Graveyard)

The Graveyard (added December 14, 2025) works differently from the other maps:

1. Unlock: on Desert Tier 2 as Calcium, open the four coffins and defeat the ghosts.
2. Crypt (start): free chests; get out before the timer ends or Spooky Steve spawns.
3. Graveyard (15 minutes): minibosses at 13:00, 9:00 and 3:00, swarms at 12:00, 8:00 and 2:00. Find the four crypt ghosts (red beams) for their keys. There is no stage boss at the exit.
4. Second crypt: about a minute before Steve appears; it leads to Big Bob's room.

• Big Bob floods the room with lava — extra jumps help, Monke can climb.
• The room goes dark before his one-shot attack. Stand inside one of the four lit lamps (charge shrines) to survive. Lamps run out, and their explosions also damage Bob.
• Killing Big Bob unlocks the Scythe. The "Bob's Light" achievement only needs the killing blow from a lamp explosion since v1.0.49.
• Guide build: Dexecutioner, Katana and Aegis next to your starter; Moldy Cheese and the Sucky Magnet.
• On the map: tombstones (purple dots) give +10% XP and +5% Difficulty each; Shrines of Balance double one stat and halve another permanently; pumpkins break like pots.

Spooky Steve (Graveyard)

Steve build (most-cited guide)

• Weapons: Dexecutioner, Frostwalker, Black Hole + any fourth.
• Tomes: Duration (core), Cooldown (attack speed), Quantity, XP.
• Items: Ice Cube, Ice Crystals, Za Warudo. Take 200% Duration from a Shrine of Balance; never take a Duration or Speed debuff.
• Avoid Difficulty (it makes Steve faster) and Knockback (Steve ignores walls and slips out of your black holes).
• Stand still once he is locked so the slows keep stacking.

Where guides disagree

Reddit notes come from search-result snippets (Reddit blocks our direct reads): Thunder Mitts can stun him but he becomes immune to shock after about 3 minutes, and Joe's Dagger does no damage to him. Treat these as player reports.

Secret bosses: Bush and Bandit

Suspicious Bush (Forest) and Bandit (Desert) are hidden bosses with high health and damage that scale with Difficulty. Each drops a free chest and unlocks the matching character the first time. A player guide warns many runs end here: only start the fight if you can kill them quickly.