It's time for you guys to know who the bosses are on each map, uhm for your own safety. c",)V
Reboldoeux Stone Pit - no boss
Ferrucio Junction - Hill Giant
Al Quelt Moreza - Violent Hound Leader
Al Quelt Moreza Nartex - Cerbera, Togat Huganoid
Al Quelt Moreza Parsonage - Siegmund, Togat Huganoid
Al Quelt Moreza Hollow - Dilos Latemn
The Cathari Falls - Skullic Leader
King's Garden - Skullic Leader
Tetra Hills - Phobitan Imp Leader
Tetra Grand Corridor - Phobitan Chieftain
Tetra Catacomb - Siegmund, Pollux
Tetra Golden Road - Castor
Tetra Antiquities Room - Treasure Golem (key required)
Jezebel Glen - no boss
Porto Bello - no boss
Porto Bello Deck - Merman Chieftain, Escudo Percher
Porto Bello Cabin - Siegmund, Norsair Captain
Porto Bello Hold - Parsiar Captain
Porto Bello St Catharina's Saloon - Chimaera (key Required)
Porto Bello Deserted Quay - Walansche
Porto Bello Desolate Cliff - Bellboy of Mein, Captain Sharffenberger, Vergo the Cursed (Raid Boss, Very Good Loots)
Thuringenwald - Sunflower Dandelion Gorilla
El Lago de Tres Hermanas - Sunflower Dandelion Gorilla
El Tejado Verde - Violent Daemonische
Torsche Mansion Savage Garden - Gehvras
Torsche Mansion Reception Hall - Hollow Footman Captain
Torsche Mansion Grand Library - Victor
Predera de Ceniza - Violent Gehcos, Diablo (Raid Boss)
Rion Prairie - Giant Cockatrice
Rion Dungeon Corridor - Joaquin Bear Leader
Rion Dungeon Hollow - Joaquin Bear Leader
Bonavista River - Giant Cockatrice
Vegas Javier - Powerful Phobitan Imp, Great Hill Giant (Faction Quest), Griffon (Raid Boss)
The Crater of Joaquin - Violent Joaquin Bear
Prison de Joaquin, The Mohrgus - Dragon Head, Chrysallis (Faction Quest), Dr Fran Mothtein (Faction Quest, Bernelli's Quest)
Prison de Joaquin, The Altar of Despair - Jabberwock Captain
Prison de Joaquin, The Torture Chamber - Vladimir
Prison de Joaquin, Schivarliere - Fallen Champion, Succesful Subject (Pioneering Quest)
Prison de Joaquin, Gehanna Bridge - Gerero (Raid Boss)
Old Port of Coimbra - Dekavaria (Raid Boss)
El Ruina de Memoria - Violent Ghost Baron
El Canon de Diabolica - Violent Ghost Baron
Lago Celeste - Golden Spider
Rio Alibi - Giant Comodo
Ustiur Zona Uno - Sabel Tiger, Rafflesia Raid Boss
Ustiur Zona Dos - No Boss (not sure if Sabel Tiger also spawns, will research further)
Ustiur Zona Tres - Sabel Tiger
Ustiur Zona Quatro - Spinosaurus
Skullic Dungeon 1st Floor - Skullic Leader
Skullic Dungeon 2nd Floor - Thoracotomy (Raid Boss)
Skullic Dungeon 3rd Floor - Boneless (Raid Boss)
Skullic Dungeon 4th Floor - Necromancer (Raid Boss, key required)
Topolo Duraga - Phobitan General
Via Fluvial - Dreamblade
Deprimida Valley - Dreamblade
Albertral - Capybara Leader
Capybara Plantation - Golden Bat
Scorching Plateau - Johannes Leader
Katovic Snowfield - Elmorck
Frozen Plain - Elmorck
Snowfield of the Ice Wizard - Avalanche Apparition
I will post more of the bosses next time. I need to do more research on other maps especially those of high level and on maps for the upcoming Bahama Swamp patch. This post is open for comments and corrections if there is any. Thanks.