Legendary Warrior from the "Surviving the Game as a Barbarian" collaboration, added in update 1.39.0 (15 September to 10 November 2026) and free through the event's 28-day attendance rewards.
A free Legendary who turns Max HP into damage through Gigantization's +30% and Flesh Burst, with a 4★ Skill Link that lends Gigantization to every Warrior. That damage has to build, so short chapter fights end before it does and Rose stays ahead.
Overview
Bjorn turns Max HP into damage twice. Gigantization adds up to 30% to all his damage as his Max HP climbs, and Flesh Burst fires whenever he hurts himself, stripping a tenth of the enemy's Block and hitting harder for each 100% of bonus Max HP. His own Berserk Potion drains him on a timer to keep that loop going.
That earns him A. Spiked Armor raises Max HP, so standard Spike gear doubles as his damage. He is free from the collab's attendance rewards until 10 November, and his 4-star Skill Link lends Gigantization to any Warrior. Time keeps him out of S: fast chapter builds end a fight in about ten seconds, while his damage is still climbing.
Bring White Wolf Captain for Haste, Tiger for early damage and a heal like Fairy. Claim him before the collab ends and star him to 4.
Each Spiked Armor raises Max HP by 40%, which feeds Gigantization's damage bonus of up to 30%, and adds 5 Spike every 3.5 seconds. Jellyfish Princess keeps adding Spike while Bjorn is stunned, and Staff of Vitality turns a quarter of its overhealing into Block.
Pet order. Jellyfish Princess on rounds 1, 5 and 10; Red Dragon for round 12.
The final boss regenerates, so the Candlestick's 50% healing cut, a spare Torch's 15% and Ice Reaper's 40% are stacked for the last round. Spiral Spear triggers Spike 6 times per skill hit on top of the Spiked Armor.
Pet order. Red Dragon and Jellyfish Princess on the round 4 and 8 bosses, with Ice Reaper left off; Ice Reaper only for the healing final boss.
Ice Reaper's healing cut shrinks the HP the Bloated Corpses revive with, and the Broom strips 5 debuffs every 5.5 seconds against the poisoning final boss. Spiked Armor keeps raising Max HP, and with it Bjorn's damage.
Pet order. Ice Reaper on rounds 2 and 6; Red Dragon and Jellyfish Princess on the harder rounds.
Healing and plain weapons hold the early rounds until Spiked Armor comes together, then Spike does the damage. A Candlestick and one Torch cut the final boss's regeneration by 50% and 15%.
Pet order. Save all three pets for the boss rounds.
Four Spiked Armors and a pack full of Spikes, with Leather Gloves and Whetstones speeding up and strengthening the pieces around them. Yeti's 10 seconds of Stun immunity covers the opening.
Pet order. Yeti at the start of stun-heavy fights; Red Dragon on the boss round.
Bjorn's damage builds slowly as his Max HP grows, so this run uses White Wolf Captain's Haste and Tiger's 25% weapon damage to speed up the opening seconds. Mimic merges the HP pieces faster.
Skill
Gigantization
All DMG rises with the Max HP you gain on top of your base, up to +30%. Bjorn also grows in size as it climbs.
Bjorn's exclusive items
Only Bjorn can find these in a run: buy them from the shop, or merge them where a recipe is listed. Effects, stats, prices and shapes are the game's own numbers.
Lithinum
Unlocks Lithinum in the shop during a run.
Lithinum Greatshield
Unlocks Lithinum Greatshield — buy it from the shop or build it through Bjorn's exclusive merge recipe during a run.
Bjorn star progression
What Bjorn gains from unlock to 9 stars. The Ownership bonus raises every hero's HP, whoever you play. Supply Ability is how many supplies you can take into a run.
When the fight starts, raise Max HP by 15%. Every 3.5s Lose 0.15x Max HP, and socketed gains 15% Haste. HP Lost from this effect increases by 0.05x Max HP each activation.
When the fight starts, gain 6 Vamp. On 15% HP Loss: DMG increases by 50%.
6★
Ownership +60% HPShards 200
7★
Ownership +75% HPShards 300
+
New supplyLithinum Greatshield
8★
Ownership +90% HPShards 500
⛓
Skill Link: Flesh Burst
Other Warrior heroes can now equip this skill.
9★
Ownership +105% HP
Other skills
The rest of Bjorn's kit. The headline skill is shown above; ownership, supplies and exclusive items are in their own sections.
Flesh Burst
Whenever you lose HP yourself: strip 50% of your own Block and 10% of the enemy's, then deal damage. Every 100% of bonus Max HP raises Flesh Burst's damage.
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