ratchet and clank boss tier list

S Tier (Best of the best):
Dr. Nefarious (Up Your Arsenal)

A Tier (incredible fights, with few issues):
Captain Qwark (2016)
Ace Hardlight (Deadlocked)
Chairman Drek (Ratchet & Clank)
Slag & Darkwater (Quest for Booty)
Courtney Gears (Up Your Arsenal)
Jack Of All Trades (Secret Agent Clank)
Captain Slag (Tools of Destruction)

B Tier (Great fights that have minor issues involving difficulty or length):
Gleeman Vox (Deadlocked)
Loki Master (All 4 One)
Emperor Tachyon (Tools of Destruction)
Mechanical Monster (Secret Agent Clank)
Gary & Helen (Up Your Arsenal)
Thugs-4-Less Mech (Going Commando)
Terror of Talos (Up Your Arsenal)
Commander Spog (All 4 One)
Blargian Snagglebeast (2016)
Reactor (Deadlocked)
Momma Tyhrranoid (Up Your Arsenal)
Mysterious Thief (Going Commando)
Mrs. Zurkon (2016)
Mutant Protopet (Going Commando)
Klunk (Secret Agent Clank)

C Tier (Good fights, but not great):
Eviscerator (Deadlocked)
Vid-Comic Dr. Nefarious (Up Your Arsenal)
Giganto-Mech (Going Commando)
Light-Eating Z'Grute (All 4 One)
Mothership (Going Commando)
Blargian Snagglebeast (Ratchet & Clank)
Zorthan (Tools of Destruction)
Dr. Nefarious (2016)
Shellshock (Deadlocked)
Swamp Monster II (Going Commando)
Crushto (Tools of Destruction)
Wigwump (All 4 One)
Giant Klunk (Up Your Arsenal)
Iron Crotch Caruso (Tools of Destruction)
Puffy Pants Wallace (Tools of Destruction)
Greasepalms McGee (Tools of Destruction)
Warship (Up Your Arsenal)
Thugs-4-Less Copter (Going Commando)
B2 Brawler (Going Commando)
Basilisk Leviathan (Tools of Destruction)

D Tier (OK fights):
Qwark's Ship (Ratchet & Clank)
Scorpio (Up Your Arsenal)
Sepiad (All 4 One)
Chainblade (Going Commando)
Arachnoid (Going Commando)
Captain Blackstar (Up Your Arsenal)
King Sepiad (All 4 One)
Octomoth (All 4 One)
Captain Qwark (Up Your Arsenal)
Space Kudzu (Secret Agent Clank)
Telepathopus (2016)
Mr. Perkins (All 4 One)

F Tier (Fights that aren't bad but are forgettable):
Giant Mama Butterfly (Secret Agent Clank)
Robot Space Eel (Up Your Arsenal)
MegaRock (Secret Agent Clank)
Tank Minion (All 4 One)
Pirate Rogue (Tools of Destruction)
Alien Queen (Ratchet & Clank)
Swamp Monster I (Going Commando)
Victor Von Ion's Ship (2016)
Grungoths (All 4 One)
Groundpounder (All 4 One)
Scorch Minion (All 4 One)

Z Tier (outright bad):
Kerchu Mechwrecker (Tools of Destruction)
Megapede (Going Commando)