Mons Robo (モンスロボ Monsurobo) is a Kaiju that appears in the TV series, Jumborg Ace.

Subtitle: One-eyed Cyborg (一つ目サイボーグ Hitotsu-me saibōgu)


Jumborg Ace

Mons Robo was created by Anti Go-Ne combining a monster and a robot. He was unleashed at a petroleum complex. The Kaiju was instructed by his master to use his secret weapon, his horn missile, and aim it at Jumborg Ace' eyes. Mons Robo caused destrution, but PAT arrived to attack him. Naoki then flew his Jum Cessna even though it was low on fuel, and transformed into Jumborg Ace. The hero and cyborg Kaiju battled, but Jumborg's low fuel began to take it's toll. Luckily, PAT managed to hit Mons Robo with anesthesia bullets, making him unconscious.

Mons Robo awoke again and began another rampage at the petroleum complex. Naoki managed to get his plane back after it was sold, and transformed once again. Jumborg Ace pulled out Mons Robo's horn and threw it back at him, exploding in the kaiju's face. Jumborg then used the heading killer technique to decapitate Mons Robo, killing the cyborg in a huge explosion.


  • Designer: Yoshiaki Yoneya


  • Height: 51 m
  • Weight: 49,000 t
  • Origin: Tokyo suburbs
Powers and Weapons
  • Flames: From his mouth, Mons Robo can spit a deadly flame.
  • Rotating Horn: Mons Robo can spin his horn and charge at the opponent.
  • Horn Launch: Can launch his horn out of his head like a missile and another horn would come out.
  • Burrowing: Mons Robo can burrow underground to hide from it's enemies.


Jumborg Ace Kaiju
Jumborg Ace Alien Gross | Anti Go-Ne | Alien Emerald | King Jaigras | Rubangar King | Chitangar | Giant Robot Zero | Death Kong King | Mons Robo | King Deadgone | Glass King | King Ginger | Flight King | Remodeled Flight King | Dokuros King | Golden Arm | Dead Fire | Mad Go-Ne | Mad Saturn | Mighty Gross | Demon Star | Freeze Killer | Alien Emerald II | Antron | Valentine | Dump Kong | Wutan | Ghost King Jaigras | Ghost Demon Star | Ghost Antron | Ghost Dokuros King | TerroKing | Stone King | Chameleon King | Gaiagnes | Nonbirigon | Jumkiller | Airdolmen | Imitation Jumborg Ace | Killer α | Killer β | Arumazigon | Satan Go-Ne | Butterfly King | Gold Dragon | Orolonger | Electric Bird | Kendaurus | Death Moon | Skeleton | Babaras | Honest King | Jumkiller Jr. | MirrorKing | King Beetle | Remodled Satan Go-Ne | Demon Go-Ne | Alien Emerald III
Jumborg Ace & Giant Demon Go-Ne | Anti Go-Ne | Mad Go-Ne | Alien Gross | Jum Killer Jr. | Killer α | Gaiagnes | King Jaigras | Rubangar King | Chitangar | Giant Robot Zero | DeathKong King | Mons Robo | Glass King | King Ginger | Flight King | Dokuros King | Golden Arm | Dead Fire | Mighty Gross | Demon Star | Freeze Killer | Antron | Valentine | Dump Kong
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