Destructisvere
Although toku's Masked Rider used footage from Kamen Rider Black RX this monster was from Kamen Rider Zo.
"Escape From Edonoi Parts 1 and 2"
Beetletron
"Escape From Edonoi Part 2"
Larvatron
"A licence to Thrill"
Mandible
"Pet Nappers"
Mothitron
"Bugs On The Loose"
Crimson Creeper
"Arcade Ace"
Robo Rider
Robo Rider is actually Dex's best friend from edonoi Donais. Once Dregon found out that Donais was heading to earth to give Dex the powers of Super Gold he kidnapped him and used the Super Gold Crystal to transform Donais into Robo Rider.
"Super Gold Parts 1 and 2 "
Slimeasect
"The Grandma Factor"
Termasect
"The Grandma Factor"
Recycltron
"Something's Trashy"
Firebug
"Water Water Everywhere"
Robosect
This insectivore was the closet insectivore to destroying Masked Rider if it weren't for Dex's Super Gold powers he might not have won the battle.
"Dance Crazy"
Hydrosect
Not from Kamen Rider Black RX.
"Stranger From The North"
Skull Reapers
"The Green Eyed Monster"
Triptron
This insectivore can spilt into 3 making it even more powerful.
"Unmasked Rider"
Helliotoid
"The Heat is on."
Tentacion
"The Dash"
Water Bug
"Back To Nature"
Turtletron
He can shoot his head out of his shell allowing him to split into two.
"Ferbus' day out"
Liquuesect
Has the ability to liquefy himself just like Masked Rider Super Blue can.
"Jobless"