Yu Ef Oh
| Yu Ef Oh | |
|---|---|
 Screenshot from Yoshi and the Mysterious Book | |
| Appears in | Yoshi and the Mysterious Book (2026) |
| Variant of | UFO |
Yu Ef Ohs are flying saucer creatures that appear in Yoshi and the Mysterious Book. Yu Ef Ohs are first encountered in the Hauger Habitat, where one is seen entangled in vines. After Yoshi frees it using the Hauger, Bowser Jr. and Kamek make use of it, claiming such a craft would be useful in finding the Bewilder Bird, before engaging in combat with Yoshi and the Hauger. Kamek and Bowser Jr. use this Yu Ef Oh to fly around and drop bombs at Yoshi, but Yoshi can use the Hauger's drill jump to bounce these exploding rocks back, or attack the flying ship head-on. After enough hits, the Yu Ef Oh is destroyed, and Kamek and Bowser Jr. are defeated.
A larger, inactive Yu Ef Oh can be found in the Hauger Habitat as well, located in an underground pond covered in moss as if it has been abandoned; a Smiley Flower is located to its right in the dirt. A smaller, suction cup-shaped Yu Ef Oh is encountered in the Raven Habitat where it can be summoned by activating five musical satellites in the right order. This type of Yu Ef Oh can also be destroyed with a Ground Pound from a Raven.
Overview[edit]
The Yu Ef Oh has its own dedicated stage in Chapter 10: Moon called the Yu Ef Oh Base, which is unlocked by completing the Eleedee Habitat. At first, the Yu Ef Oh encountered in the Yu Ef Oh Base lays inactive and starts moving if Yoshi interacts with it in any way. Once it starts moving, it will follow Yoshi around the stage while attempting to suck him up with its tractor beam. By using the tractor beam, Yoshi can easily move around the stage by "swimming" in the air. Yoshi can use this to swim inside water which he normally cannot do. He can also use the Yu Ef Oh's tractor beam to move boulders blocking something in the ground.
The Yu Ef Oh's main driving point is to pull in whatever it can with its tractor beam in order to study it. As Yoshi moves around the stage, he can throw an item or a creature inside the Yu Ef Oh. When it absorbs something, a circular gauge appears next to the Yu Ef Oh to indicate how much data it acquired from the absorbed item or creature. Yoshi can then guide and connect the Yu Ef Oh to an uploading station at the center of the stage so that it can upload all the data it has gathered so far, which empties the Yu Ef Oh's own gauge. Filling the uploading station gauge is required to complete the stage.
Certain creatures and items may invoke various effects on the Yu Ef Oh, some of which are required to progress certain discoveries within its home habitat:
| Subject | Effect | Notes |
|---|---|---|
| Creatures | ||
| Yoshi | Yu Ef Oh will shake for a bit, then spit Yoshi out. | The direction of Yoshi's launch trajectory can be slightly adjusted using  , which will slightly tilt Yu Ef Oh and its associated target cursor in the desired direction.This method can also be used to damage Bowser Jr. during his boss fight in Bewilder Bird Habitat or the moon's core in its final boss fight, although Yoshi can also "swim" in the tractor beam to also deal damage to the latter. |
| Butterflies | Releases several tokens. | |
| Springhoppers | Releases several tokens. | |
| Golden Bug | Releases all the tokens held by Golden Bug. | |
| Neon Bug | Causes Yu Ef Oh to "activate sparkle mode," making it illuminate dark areas for a short period of time. | |
| Crazee Dayzee | Spits out the Crazee Dayzee in its "withered" (gray) state. | |
| Mildes | Merges them to create a Mega Milde. | |
| Flooflies | Merges them to create a Big Floofly. | |
| Ouchin | Sheds the Ouchin's spines when fired out, giving it the same appearance as if were cooked via a campfire. | |
| Small Nep-Enut | Causes Yu Ef Oh to output rainfall, making it able to water flowers and Crazee Dayzees. | |
| Loopdeecoop egg | Hatches a small Loopdeecoop inside, then spits it out. | |
| Loopdeecoop | Drains the energy of the Loopdeecoop, making it tired. | |
| Detonut | Due to it being an explosive creature, it causes Yu Ef Oh to glow red and cause a warning sound, before creating an explosion. | This explosion does not destroy Yu Ef Oh, although it causes its external surfaces to be momentarily covered in ash. |
| Shy Guys | The Yu Ef Oh shakes, before revealing that the Shy Guys have hijacked the creature, allowing them to use it to return home. | To trigger this interaction, all Shy Guy colors that can be seen in the lab must be tossed into the Yu Ef Oh's tractor beam. |
| Tumball | The Tumball gets stuck within Yu Ef Oh, and the latter struggles for a few seconds before spitting it out. Yoshi can follow the Yu Ef Oh in this state to destroy horizontal concrete beams in the ground to access underground areas. | |
| Billeau | Absorbs all of the creature's gas clouds, causing its lights to glow purple in the process. Eventually, it will eject all the gas clouds from Billeau, propelling it quickly upward and destroying any concrete beams above it. | |
| Blorps | Combining two Blorps with Yu Ef Oh will create a new Blorp that inherits the traits of the Blorps it absorbed. | |
| Alien's escape pod | The escape pod is jammed inside Yu Ef Oh. Yoshi can hit the escape pod from below to force it inside Yu Ef Oh, rescuing the alien inside. | |
| Items | ||
| Flowers | Collecting multiple flowers will cause the creature to create a Flower Crown. | The color of the flower crown is based on what color of flowers were absorbed by the creature. |
| Apple | Yu Ef Oh absorbs the apple's nutrients and leaves it drained. | |
| Hot pepper | Yu Ef Oh turns red and spins at a very fast speed, allowing it to destroy solid walls in some parts of the habitat. | |
| Watermelon | Spits out watermelon seeds. | |
| Winged Cloud | Releases its contents, mainly a Smiley Flower. | |
| Egg | Is jammed into Yu Ef Oh, which stuns it and causes the craft to slowly descend downwards. After a few seconds, the egg eventually pops out. | |
| Nut | Is jammed into Yu Ef Oh for a few seconds, then is eventually launched downward, cracking it open upon impact. | This particular behavior can also be observed in Bewilder Bird Habitat if returned to after completing Yu Ef Oh Base. |
| Bowser Jr.'s fireballs | Launches the fireball downward. If aimed directly on Bowser Jr. during his boss fight, he will take a sliver of damage. | This particular behavior is exclusively observed in Bewilder Bird Habitat. |
| Sleeping gas from the moon's core | Is absorbed in a similar fashion to Billeau, but otherwise does nothing to impact Yu Ef Oh itself. This is one of the many ways to get rid of the sleeping gas surrounding the core at one point during the boss fight. | This particular behavior is exclusively observed in the final boss fight on the Moon. |
While they are considered "creatures" to fit with the game's core gameplay of studying creatures, Yu Ef Ohs still behave like machinery. While they run on autopilot, they can be manually controlled by anyone, as is evident in the fight against Bowser Jr. and Kamek in the Hauger Habitat, as well as a discovery in the Yu Ef Oh Base in which a Yu Ef Oh can be overridden by formerly captive Shy Guys who use it to return home. Yu Ef Ohs can be destroyed by heavy impacts like several hits from a Hauger's drill-like face or a Ground Pound from a Raven. Because Yoshi is smaller, his Ground Pounds can only stun the Yu Ef Oh for a few seconds.
Naming[edit]
"Yu Ef Oh" is a pronunciation respelling of "UFO", a term applied to unidentified flying objects like flying saucers.
When the name is suggested by Mr. E, he says the following:
- “Well, it seems otherworldly and defies simple explanation... so how about Yu Ef Oh?”
- —Mr. E
Names in other languages[edit]
| Language | Name | Meaning | Note(s) | Ref. |
|---|---|---|---|---|
| Japanese | ゆーほー Yūhō | Orthographical and phonetic corruption of「 | [1] | |
| Chinese (Simplified) | 幽浮 Yōufú (Mandarin) Yãufàuh (Cantonese) | Phono-semantic matching of English "UFO", chiefly used in Taiwanese Mandarin | [2] | |
| Chinese (Traditional) | 幽浮 Yōufú (Mandarin) Yãufàuh (Cantonese) | Phono-semantic matching of English "UFO", chiefly used in Taiwanese Mandarin | [3] | |
| Dutch | Schootell | Sauucerr; corruption of schotel ("saucer") | [4] | |
| French (Canada) | Ovnion | From ovni ("UFO") with the diminutive suffix -on | [5] | |
| French (Europe) | Ovnion | From ovni ("UFO") with the diminutive suffix -on | [6] | |
| German | Untertassel | Corruption of Untertasse ("saucer") | [7] | |
| Italian | Dottorufo | From dottore ("doctor") and "UFO" | [8] | |
| Korean | 유에포 Yuepo | UFO | [9] | |
| Portuguese (Brazil) | Hettê | Homophone of "E.T.", abbreviation for extraterrestre ("extraterrestrial") | [10] | |
| Spanish (Latin America) | Ocni | Corruption of OVNI ("UFO"), presented as the acronym of objeto cósmico no identificado ("unidentified cosmic object") | [11] | |
| Spanish (Europe) | Ocni | Corruption of OVNI ("UFO"), presented as the acronym of objeto cósmico no identificado ("unidentified cosmic object") | [12] |
References[edit]
- ^ 「もう わかりやすく ゆーほーで どうだ？」– Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (Japanese).
- ^ "干脆直白一点，就叫它幽浮，怎么样？" – Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (Simplified Chinese).
- ^ 「簡單明瞭一點，就叫他幽浮如何？」– Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (Traditional Chinese).
- ^ "Het is een vliegende schotel die allerlei beestjes en voorwerpen beproeft... Schootell, is dat wat?" – Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (Dutch).
- ^ « Eh bien, il ne vient clairement pas de notre planète... Que dis-tu d'Ovnion? » – Mr. E (May 21, 2026). Yoshi and the Mysterious Book by Good-Feel. Nintendo (Canadian French).
- ^ « Eh bien, il ne vient clairement pas de notre planète... Que dis-tu d'Ovnion ? » – Mr. E (May 21, 2026). Yoshi and the Mysterious Book by Good-Feel. Nintendo (French).
- ^ "In Anbetracht der Eigenschaften und des Aussehens drängt sich mir ein Name auf... der Untertassel!" – Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (German).
- ^ «Incute rispetto e sa il fatto suo. Che ne diresti di un nuome un po' altisonante come... Dottorufo?» – Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (Italian).
- ^ "그냥 알기 쉽게 유에포은 어떨까?" – Mr. E (May 21, 2026). Yoshi and the Mysterious Book. Good-Feel (Korean).
- ^ "Para mim, parece que alguém está pilotando um objeto extraterrestre... Que tal Hettê?" – Mr. E (May 21, 2026). Yoshi and the Mysterious Book by Good-Feel. Nintendo (Brazilian Portuguese).
- ^ "Bueno, como es básicamente un objeto cósmico no identificado, ¿por qué no lo llamamos Ocni?" – Mr. E (21 May 2026). Yoshi and the Mysterious Book. Good-Feel (Latin American Spanish).
- ^ «Bueno, como es básicamente un objeto cósmico no identificado, ¿por qué no lo llamamos Ocni?» – Mr. E (21 May 2026). Yoshi and the Mysterious Book. Good-Feel (European Spanish).
