Keyzer is a sleepy ghost character who assists Wario in Wario Land 4. Keyzer has a key for a nose and lips, and uses it to unlock doors.
In Wario Land 4[]
A ghost steals Keyzer from Wario
Keyzer is found in all 18 stages, and it is always found asleep at first until Wario gets near, causing Keyzer to wake up. Keyzer then follows Wario around for the remainder of the stage, and even leaves into the Vortex with him at the end. Afterward, back in the passage, Keyzer travels over to the locked door and unlocks it, allowing Wario to progress to the next stage. However, Keyzer disappears after unlocking the door, and does not return in the same stage afterward.
Crescent Moon Village features a ghost who is interested in Keyzer. It tries to steal Keyzer throughout the stage, and even moves around faster while holding Keyzer to try and prevent Wario from rescuing it. Even after Wario rescues Keyzer, the ghost attempts to kidnap it again.
Gallery[]
[Edit] 
| ||
|---|---|---|
| Characters | Protagonists | Wario • Black Cat • Keyzer • Arewo Shitain-hakase • Shop owner • Princess Shokora • Game Bot |
| Bosses | Spoiled Rotten • Cractus • Cuckoo Condor • Aerodent • Catbat • Golden Diva | |
| Enemies | Enemies | Beezley • Black egg • Bow Balloon • Butatabi • Deburīna • Denden • Dice • Egg • Eggplant Warrior • Ghost • Glass bird • Goggley-Blade • Green enemy • Hammer • Harimen Zetto • Hoggus • Hotaru • Imomushi • Iwao • Kaentsubo • Lips • Marumen • Mayubird • Mechanical fish • Menhanmā • Men'ono • Mine • Minicula • Moguramen • Onomī • Petbottom • Pig Head Statue • Pin enemy • Ringosukī • Robobird • Shieragucchi • Skeleton Bird • Spear-Mask • Spike Cannon • Spiky • Teddy Bear • Tobawani • Togemasuku • Togenobi • Togerobo • Totsumen • Toy Car • Utsuboankō • Yeti |
| Locations | General | Golden Pyramid • Item Shop • Mini-Game Shop • Pink area • Sound Room |
| Passages | Entry Passage • Emerald Passage • Ruby Passage • Topaz Passage • Sapphire Passage • Golden Pyramid | |
| Levels | Hall of Hieroglyphs • Palm Tree Paradise • Wildflower Fields • Mystic Lake • Monsoon Jungle • The Curious Factory • The Toxic Landfill • 40 Below Fridge • Pinball Zone • Toy Block Tower • The Big Board • Doodle Woods • Domino Row • Crescent Moon Village • Arabian Night • Fiery Cavern • Hotel Horror • Golden Passage | |
| Items | General | Blue Crystal • CD • Coin (Bronze Coin • Gold Coin • Silver Coin • Small Coin) • Diamond • Legendary treasure • Little heart • Medal • Red Crystal |
| Shop | Apple Bomb • Big Fist • Blast Cannon • Black Dog • Black Dragon • Bugle • Full Health Item • Heart • Jewel • Jewel piece • Large Lips • Smile • Vizorman | |
| Objects | Objects | "!" Button • Block • Blue block • Bonfire Block • Brown block • Bubble • Button • CD box • Chance wheel • Chandelier • Chomp ball • Decompressor • Domino block • Electric spark • Flower • Flying carpet • Jewel piece box • Kaeru Block • Pinball digital counter • Pinball tulip • Piston • Round red rock • Spike • Switch • Togetoge • Toy Block Door • Treasure chest • Triangle block • Vortex • Wario Car • Warp Pipe |
| Minigames | Minigames | The Wario Hop • Wario's Homerun Derby • Wario's Roulette |
| Miscellaneous | Forms | Bouncy Wario • Bubble Wario • Fat Wario • Flaming Wario • Flat Wario • Frozen Wario • Puffy Wario • Snowman Wario • Bat Wario • Zombie Wario |
| Other | Gallery | |