Menon Forces

Description
The Menons are evil, dangerous monsters that may seem innocent and cute on the outside, but are ugly on the inside.

Leaders

 * Opapa (Leader; Defected)
 * Dark Opa-Opa (Opa-Opa's evil alter-ego)
 * Dark Master (Leader of Dark Menon)
 * Uriah (Leader of the demonic creatures)

Fantasy Zone

 * Stunpalon (Boss of Plaleaf)
 * Volanda (Boss of Tabas)
 * Cobabeach (Boss of La Dune)
 * Crabumger (Boss of Dolimicca)
 * Poppoos (Bosses of Polaria)
 * Winklone (Boss of Mockstar)
 * Ida-2 (Boss of Pocarius)

Sega Ages Remake

 * Skarotten (Boss of Dawndusk)
 * Poganel (Boss of Apochal)
 * Metitsuta (Boss of Cavian)
 * Pickon (Boss of Depooble)

Fantasy Zone II: The Tears Of Opa-Opa

 * Woodpole (Boss of Pastaria/Postaria)
 * Hangmerudia (Boss of Sarcand/Sarcard)
 * Iceburn (Boss of Hiyarika/Hiyarican)
 * Bombdran (Boss of Bow Bow/Vow Vow)
 * Buubuuman (Boss of Chaprun/Caprifta)
 * Accordlon (Bosses of Fuwareak/Fuwaread)
 * Halorings (Bosses of Sbardian/Sbardius)

Dark Menon

 * Lanturn
 * Zeek
 * Pooka
 * Axe Head
 * Dogu
 * Raiden
 * Ammostie

Fantasy Zone

 * Dralinflores
 * ByeBubbles
 * Patatons
 * Doringas
 * Pakkarians
 * Barungas
 * Roringas

Fantasy Zone

 * Quili-Quilis
 * Moocolons
 * Coulons
 * Sourthams
 * Bottacos
 * Goros
 * Floweyes
 * Onyanmas
 * Bonts
 * Billians
 * Recals
 * Squels
 * Thaya-Thayas
 * Jerries
 * Poyons
 * Patas

Fantasy Zone
In Fantasy Zone, the Menon Forces steal money from planets in order to construct a fortress in the Fantasy Zone. Unfortunately, Opa-Opa stops their plans and destroys the invaders. In the ending, it's revealed that O-papa, Opa-Opa's father, is the leader of the Menons.

Fantasy Zone II: The Tears Of Opa-Opa
In Fantasy Zone II, the Menons return to invade the Fantasy Zone and are once again stopped by Opa-Opa. As the ending reveals, the true mastermind behind these creatures is none other than Opa-Opa's dark side.

Trivia

 * In Segagaga, some Menons appear as attack waves for the last boss.