Xenlon is an additional post-game boss made for the Super Famicom, Game Boy Color, and mobile remakes of Dragon Quest III. She is a green eastern dragon of immense age and magical capability, granting wishes to those able to best her in battle. Xenlon later appeared in the Dragon Quest Monsters series that was one of the most difficult monsters to synthesize.
She is found at the top of Zenith Castle, sleeping at the summit. She can be battled multiple times in order for a wish to be granted. Upon beating her, she will transport the party to the outside of the Castle of the Dragon Queen whether a wish is made or not.
This divine dragon is by far the strongest foe in the game, and will make Zoma look like a chump. She has immunity to every status debuff, and even Drain Magic, so the only way to approach this fight is with a full frontal assault with Oomph and Falcon Blades. Her specific action attacks like chewing on a character will ignore defence, so don't even bother with Kabuff. Instead, keep Acceleratele up at all times to make life easier for healers. Also, because Xenlon only has one spell and an equal chance to use any of her actions, Insulatle is a better idea than Bounce.
On the bright side, Xenlon has no resistances to offensive spells, meaning that if the hero has enough MP, you can cast Kazap over and over again to whittle down her health. Magi and Sages should only cast Kafrizzle when healing and buffing have already been covered for the turn.
In Dragon Quest III, due to Monster Medals being saved automatically, the player can save wishes by defeating her and getting all of her sets of medals, then resetting the game.
This character is likely a tribute to Akira Toriyama's Dragon God Shenron. Not only do they look extremely similar (the only difference being Shenron's glowing red eyes), they also grant wishes. In addition, the kanji for Shenron's name in Dragon Ball is 神龍 (meaning "god dragon"), which can be read "shen long" in Mandarin Chinese (which, when the Chinese reading is said by a Japanese person, becomes "シェンロン shenron" - the same as his name in Dragon Ball), whereas its read as "しんりゅう shinryū" in Japanese, the same as his name in the Japanese version of Dragon Quest.
