S Rank Hero Names
Main Villains By Description/Picture
Saitama's Main Group Of Friends By Clues
Cadres Of The Monster Association
Well Known Villains/Not Main
100
S Rank #1 
Blast
100
Universal Destroyer. Wears armor that suppresses his "boundless" power.
Lord Boros
100
His Protege
Genos
100
A black member that has an inappropriate full name
Black Sperm
100
A Sea Monster
Deep Sea King
200
S Rank #17
Puri-Puri Prisoner
200
Leader Of The Monster Association. aka The Monster King
Monster King Orochi
200
Some sort of weather we are having?
Fubuki/Hellish Blizzard
200
A Large insect that was defeated by Saitama
Elder Centipede
200
A Titan
Beefcake
300
S Rank #5
Child Emperor
300
Student Of Bang who rebelled against his master. Later declares himself a monster.
Garou
300
An S rank hero that is not what he seems
King
300
An extremely strong martial artist that undertook the monsterisation process to become even stronger. He defeated Suiryu and was subsequently destroyed by Saitama 
Gouketsu
300
A Crab
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Crablante
400
S Rank #8
Zombieman
400
Ninja That Was Contracted by Mr. Monier to defend him against a group known as The Paradisers
Speed O Sound Sonic
400
An old martial artist
Bang
400
A monster that took on the name of a japanize beamed cat meowing
Nyan
400
A Piccolo
Vaccine Man
500
S Rank #10
Pig God
500
First Villain That Gets Defeated By A Slap
Mosquito Girl
500
An old martial artist's older brother
Bomb
500
Co-Leader of the Monster Association
Psykos
500
A Last Ditch Monster From The House Of Evolution
Carnage Kabuto
