Not to be confused with Unagi the Eel, a character representative of its species.
Unagi is an eel species featured in the Mario franchise. They first appear in Super Mario 64. Unagi are commonly seen swimming through oceans and seas and other times are seen resting in their holes biting those who come near, While they do appear flimsy, it is impossible to defeat a Unagi as they are resistant to all attacks and therefore must be avoided.
He is first seen resting inside the sunken ship in Jolly Roger Bay. When Mario approaches him, he swims out of the ship allowing Mario to access and get the Power Star inside.
In the next mission Unagi is seen residing in a hole on the ocean wall, Mario can lure him out by going near. The Star is on Unagi's tail. Mario can get it by making contact with the Star.
In later missions, Unagi simply circles the drop off.
They later appear in New Super Mario Bros. in underwater levels as regular enemies. They are found in 4-3 and World 8-3. They mainly attack by poking their heads out of the holes they're resting in and trying to bite Mario (or Luigi). Some also swim along the path. Unagi cannot be defeated, not even with a Mega Mushroom or a Starman. There is also a larger version called the Mega Unagi.
Super Mario Odyssey[]
Although Unagis don't appear in Super Mario Odyssey, a similar variation called the Maw-Ray does. They attack by swimming out of holes.
Several Unagis reappear in Mario Kart Wii, where they can be seen while traveling through the underwater tunnel in Koopa Cape, poking their heads out of the Pipes underwater. A Mega Unagi can be seen swimming outside of Chain Chomp Wheel in the aquarium outside the ring.
Mario Kart 7[]
Unagis also reappear again in Mario Kart 7, in this game, they can be seen in Daisy Cruiser swimming in the waters below decks alongside some Cheep Cheeps and Clampys. They are also seen in Koopa Cape swimming around the waters. The Unagis in this game are swimming high up and as a result, are completely harmless.
Mario Kart Arcade GP DX[]
In Mario Kart Arcade GP DX, they make a small appearance in the underwater parts of the race track Tropical Coast however they're too high to reach and as a result, don't have too much impact on the race rendering them completely harmless once again.
Mario Kart 8 / Mario Kart 8 Deluxe[]
A single Unagi appears in an underwater section of the Mario Kart 8's track Dolphin Shoals, where players race along its body for a short section and can perform Tricks from its undulating body, Coins can also be seen along the Unagi's back as well. It returns in the enhanced Nintendo Switch port Mario Kart 8 Deluxe. Just like in previous installments of the Mario Kart series, the Unagi is completely harmless once again.
Slip Slidin' Away • Lil' Penguin Lost • Big Penguin Race • Frosty Slide for 8 Red Coins • Snowman's Lost His Head • Wall Kicks Will Work (N64)/Mario's Super Wall Kick (DS) • Switch Star of Cool, Cool Mountain (DS)
Big Boo's Haunt
Go on a Ghost Hunt • Ride Big Boo's Merry Go Round • Secret of the Haunted Books • Seek the 8 Red Coins • Big Boo's Balcony • Eye to Eye in the Secret Room • Switch Star of the Basement
Hazy Maze Cave
Swimming Beast in the Cavern • Elevate for 8 Red Coins • Metal-Head Mario Can Move! (N64)/Metal-Head Wario Can Move (DS) • Navigating the Toxic Maze • A-Maze-Ing Emergency Exit • Watch for Rolling Rocks • Underground Switch Star
In the Talons of the Big Bird • Shining Atop the Pyramid • Inside the Ancient Pyramid • Stand Tall On the Four Pillars • Free Flying For 8 Red Coins (5th Star, N64) (7th Star, DS) • Tox Box Switch Star (DS) • Pyramid Puzzle
Snowman's Big Head • Chill with the Bully • In the Deep Freeze (N64) • Yoshi's Ice Sculpture (DS) • Whirl from the Freezing Pond • Shell Shreddin' for Red Coins (N64) • Snowman's Silver Star (DS) • Into the Igloo • Red Coins in the House (DS)
Wet-Dry World
Shocking Arrow Lifts! • Top o' the Town • Secrets in the Shallows and Sky (N64)/5 Secrets in the Shallows and Sky (DS) • Express Elevator--Hurry Up! • Go to Town for Red Coins (N64)/Go to Town for the Red Coins (DS) • Quick Race Through Downtown! • Soaked Silver Stars (DS)
Tall, Tall Mountain
Scale the Mountain • Mystery of the Monkey Cage • Scary 'Shrooms, Red Coins • Mysterious Mountainside • Breathtaking View from Bridge (Star 5, N64)/Breathtaking View from the Bridge (Star 7, DS) • Blast to the Lonely Mushroom (Star 6, N64) (Star 5, DS) • 5 Secrets of the Mountain
Roll into the Cage (N64) • Luigi in the Cage (DS) • The Pit and the Pendulums (N64) • The Pendulum Switch Star (DS) • Get a Hand • Stomp on the Thwomp •Timed Jumps on Moving Bars • Stop Time for Red Coins • Tick Tock Silver Stars
Rainbow Ride
Cruiser Crossing the Rainbow • The Big House in the Sky • Coins Amassed in a Maze • Swingin' in the Breeze • Tricky Triangles! • Somewhere over the Rainbow • Switch Star of the Manor
Bob-omb Sudden Death • Bob-omb Trampoline • Jumping Sudden Death • Jumping Brothers • Lakitu Launch • Vs. Mario's Slides • Vs. Pair-a-Gone • Vs. Trampoline Time
Binoculars • Boulder • Bowser Statue • Cactus • Jizo • Letter • Manhole • Meat • Mini Rocket • Picture Match Part • Pole • Puzzle Part • RC Car • Spark pylon • Taxi • Tree • Zipper