|The Room of Undertale|
|Roleplayers||SuperGaming101, Moon Snail, JeloJellyJam, Fairy27, TheO0032, Dihaha|
|Release date||January 4 2017|
|Wiki of origin||Plants vs. Zombies Wiki|
The Room of Undertale is the 24th room in the Locked Room series.
The gang end up falling into a mountain called Mount Ebott. They must go through hijinks, lowjinks, puzzles, action, drama and bloodshed to get onto the next room!
- Flowey the Flower makes his return, and has a far more prominent role.
- Me is not very happy in this room, due to his dislike for Undertale.
- Lucas was unable to use his Cute Fishron mount until the battle against Omega Flowey.
- Most of the Undertale characters make their debut. Some of them move on to later rooms, most survived, but Toriel ends up dying.
- Flowey is killed by Script.
- Flowey injured the gang a lot as he absorbed the six human souls and transformed into Omega Flowey.
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