Site notice
Welcome! Please check To-Do List to see what pages need help, who is working on what, etc.

Tunnel Rhino

From Mega Man Wiki
Maverick Info
MMX3 - Tunnel Rhino Art.png
Artwork from Mega Man X3.
X3 Xtreme 2
Stage portrait(s).
General information
Name(s):Tunnel Rhino, Screw Masaider
Title(s):Subterranean Barbarian[1]
Group(s):Doppler Army, Mavericks
Appearances:Mega Man X3, Mega Man Xtreme 2
Game Info
Weapon(s):X3 XT2 Tornado Fang
XT2 Drill Crush
Weakness(es):X3 Acid Burst
XT2 Bomb Bee
XT2 Earth Gaizer
Stage(s):X3: Quarry Stage
XT2: Underground Stage

Tunnel Rhino, known as Screw Masaider (スクリュー・マサイダー) in Japan, is a Maverick from the X era, appearing as one of the main bosses in Mega Man X3. He is an earth-themed Reploid based on a rhinoceros, who crushes his enemies with his speed and drills. He was formerly a miner before he was infected by the Sigma Virus in Dopple Town.

In the Games

Mega Man X3

Sprite from Mega Man X3.

Tunnel Rhino debuts in Mega Man X3 as one of the eight Mavericks on the Stage Select screen. He serves as the boss of Quarry Stage. The Japanese game manual states that he was once a skilled mining Reploid specializing in Energen Crystals, but he has become a Maverick in Dopple Town.[2]

Tunnel Rhino's attack pattern is very predictable, but he is still quite fast and can deal heavy damage if the player underestimates him. Defeating Rhino grants X the Tornado Fang. His weakness is the Acid Burst, from Toxic Seahorse, which briefly stuns him. A boss attack rematch with Tunnel Rhino later occurs in Doppler Stage C.

Mega Man Xtreme 2

Sprite from Mega Man Xtreme 2.

In Mega Man Xtreme 2, Tunnel Rhino returns as a resurrected Maverick guardian of Laguz Island. He is one of the four bosses in Zero Mission, being the boss of Underground Stage. He grants X and Zero Tornado Fang and Drill Crush, respectively. He is weak to Bomb Bee and Earth Gaizer. Tunnel Rhino is later part of the boss attack in the Sigma Stage in Extreme Mode.

Other Game Appearances

Other Media

  • In the Rockman X3 manga, Tunnel Rhino reprises his role from Mega Man X3.
  • In the Archie Mega Man comic, Tunnel Rhino appears in the "Worlds Unite" arc as one of the many Mavericks resurrected in Sigma's army.

Official Data

Source Data
Rockman X3 (PS) manual ...[JP]
Super Famicom Kanpeki Kōryaku Series #123: Rockman X3 Hisshō Kōryaku-hō ...[JP]
Kodansha Manga Hyakka #34: Rockman X Chō Hyakka ...[JP]
Height: 315 cm Weight: 280 kg Max Power: 4200rp Max Speed: 8000rp
Compendium of Rockman X Boss File (X3) A Reploid made to mine Energen Crystals, which serve as the main power source of Reploids. He was once a diligent craftsman, but now his mining drills cause massive destruction.[JP]
Compendium of Rockman X Boss File (XT2) A mining Reploid made to extract Energen Crystals. He was once a serious craftsman, but went Maverick due to the influence of the Sigma Virus. Appeared in Mega Man X3.[JP]
Mega Man X Legacy Collection Gallery Some Reploids specialize in mining, and Rhino was the best of the bunch, so before becoming a Maverick he was tasking with mining the precious Energen Crystals that power Reploids. A diligent worker, his giant drill was his pride and joy, but he made a fatal mistake in accepting Dr. Doppler's invitation to show it off in Dopple Town. Now he uses the drill to surge through rock and earth to strike at enemies invading his territory. What weapon could stop such a huge opponent?


Behind the Scenes

Developer Commentary

"I also did the illustrations for Beetle and Rhino. At the time, we were still applying color to cels, and it took forever to dry. This one time, I stayed late at work to finish off a piece, and just when I thought I was finally done, I noticed some color on the back of my hand. I looked at the cel and was like, 'Agh! I peeled the color off!' and had to start all over again. That was really awful." - (Shinsuke Komaki)[1]


Language Name Origin
Japanese Screw Masaider (スクリュー・マサイダー) "Screw" refers to his drill, while "Masaider" is a pun on the phrase "Masaidā!" (磨砕だ!) meaning roughly "To grind!", and "sai" (サイ) which means rhinoceros. It may also be a reference to the Maasai people of Kenya, where rhinos are found.
English Tunnel Rhino Named after a rhinoceros.


  1. 1.0 1.1 MM25: Mega Man & Mega Man X Official Complete Works. 2013.
  2. Game manual, Rockman X3. December 1995.