Ryoku MR4

A pink, rubbery breed of Zan with green armor and large green barbs at the ends of its appendages that are spiked like cacti. It can stretch its limbs, unlike many types of Zan and is apparently very vain about its beautiful skin.

Etymology Edit

Ryoku is a Japanese name that means "strength" or "power," originally a Turkish word.


Game Description Image
Monster Rancher 4 "This nice monster traded in some of its battle power for its soft, velvety skin. The biggest drawback is that now it sometimes can't tear itself away from the mirror."
Monster Rancher EVO "A nice monster with nice skin, which it has sacrificed its combat strength in return for. A narcissistic character who spends most of its time in front of a mirror." Ryoku MREvo
Monster Rancher Advance N/A
Monster Rancher Advance 2 N/A
Monster Rancher DS
"Ryoku has a "nice guy" image and it gave up some combat skills for very firm, yet supple skin. Its only flaw is mesmerizing itself gazing into the mirror."
Ryoku MRDS
My Monster Rancher "It is characterized by its pink and green body color. Within the family, it's said to be a cold matchless combat machine. However, it's reluctant to fight weak monsters." Ryoku MMR


  • To obtain a Ryoku in Monster Rancher 4, use
  • To obtain a Ryoku in Monster Rancher EVO, use either the Catch Me If You Can Soundtrack or the DVD Rush Hour (Platinum Series).
  • To obtain a Ryoku in Monster Rancher Advance, use the password Troll.
  • To obtain a Ryoku in Monster Rancher Advance 2, use the passwords fU+D or ANGST.
  • To obtain a Ryoku in Monster Rancher DS, use
  • To obtain a Ryoku in My Monster Rancher, use