Bosses
30 bosses - fight guides, attacks, phases, and drops
RELL Seas has 30 bosses, from starter fights to powerful raid-style encounters. Each boss has its own attack patterns, phases, drop table and difficulty rating. Browse every boss below, then open any fight for a full guide with attacks, parry and dodge timings, and rewards.

Alucard

Baldur

Black Leviathan

Blue Leviathan

Blugori

Brogy

Cat

Crab

Demon

Giant Squid

Golem

Green Leviathan

Hippo

Katame

Kentucky Chicken

Lion

Mink Boss

Monster

Moria Boss

Octopusman

Pica

Praying Mantis

Sea Cow King

Sharkman

Skypiean Boss 1

Skypiean Boss 2

Skypiean Boss 3

Trench Boss

True Kraken

Ugly Thanos
How Boss Fights Work in RELL Seas
Most bosses fight in multiple phases with telegraphed attacks you can parry, dodge, block or evade. Every boss guide on this wiki marks which attacks are punishable and how the boss escalates as its health drops.
Boss Difficulty and Drops
Bosses are rated by difficulty and classification, from starter fights to tougher raid-style encounters that reward a coordinated crew. Drop tables include weapons and materials - we list the confirmed drops on each boss page and add the rest as they are revealed.
RELL Seas Bosses - FAQ
How many bosses are in RELL Seas?
RELL Seas has 30 bosses listed on this page, ranging from starter encounters to powerful raid-style fights. We add new bosses and their guides as they are revealed.
How do you beat bosses in RELL Seas?
Learn each boss attack pattern, parry or dodge its telegraphed moves, and bring strong Haki or a fitting God Fruit. Every boss guide lists its attacks, phases and known weaknesses.
What is the hardest boss in RELL Seas?
Difficulty is shown per boss with a star rating - higher-star, raid-style bosses are the toughest. Final balance is set at launch, so check each boss page for its current difficulty.
What do bosses drop in RELL Seas?
Bosses drop weapons and materials. Exact drop tables are still being confirmed before launch, and each boss page lists the drops known so far.