|Debut||Ninja Gaiden (NES)|
Kelbeross (ケルベロス; keruberosu) is a demonic dog creature who protects Jaquio.
It can duplicate itself to confuse the intruders and spits corrosive balls of saliva as projectiles. It is almost certainly named after the Cerberus, the mythological three headed dog that guarded the gates of Hades (hell) in greek mythology.
A loyal pet of Jaquio that once lived life as a normal dog. In an exchange for power, the Kelbeross was once killed by Jaquio and offered as a pledge sacrifice to evil spirits. Being brought back to life, the Kelboross was giving a powerful demonic form, as well as a twin. Despite this horrific act, the Kelbeross continues to live a life of unyielding loyalty and protection to its master.
|Ryu Hayabusa - Irene Lew - Robert T. Sturgeon - Ashtar - Jaquio|
|Chaos Tribesmen: Dando - Baron Spider - Funky Dynamite - Naga Sotuva|
Ashtar - Kelbeross - Jaquio - The Demon
|Locations and stages|
| Act I: 1-1 - 1-2|
Act II: 2-1 - 2-2 - 2-3
Act III: 3-1 - 3-2 - 3-3
Act IV: 4-1 - 4-2 - 4-3
Act V: 5-1 - 5-2 - 5-3
Act VI: 6-1 - 6-2 - 6-3
Act VII: 7-1 - 7-2 - 7-3- 7-4 - 7-5
USA - Tower of Lahja - Underworld
|Items, weapons and equipment|
|Dragon Sword - Shuriken - Windmill Shuriken |
Art of the Fire Wheel - Art of Fire Dragon Balls - Invincible Fire Wheel - Shadow Clone Technique
Scroll of the Spirit of the Dragon
|Concepts, organizations, and other|
|Demons - Ninpo - Chaos Tribesmen|