UNDERTALE: Hidden Characters and How to Find Them
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Here is a list of hidden characters in Undertale! Learn their appearance conditions, find hidden bosses, and discover strategies.
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Hidden Character List
| Monster | Details / How to Spare |
|---|---|
Glyde |
【Details】 ATK: Dangerous DEF:Very dangerous【How to Encounter】 Keep moving in front of the door for 3 minutes【How to Spare】 Applaud → Applaud → Nothing → Nothing → Nothing |
So Sorry |
【Details】 ATK: - DEF: -【How to Encounter】 ・Visit the MTT Resort ・Only appears from 8:00 PM to 9:00 PM on October 10th【How to Spare】 Avoid attacks until the drawing is complete |
Mad Mew Mew ※Switch version only |
【Details】 ATK: 45 DEF: ??【How to Encounter】 Clear the friendship event with Papyrus and defeat Mettaton EX【How to Spare】 Avoid attacks until she listens to your conversation |
Glyde 【Snowdin】
| Location | Snowdin |
| Conditions | Keep moving in front of the mysterious door in Snowdin for about 2 minutes before the Papyrus battle |
Glyde appears when you keep moving in front of the mysterious door below the forest in Snowdin for about 3 minutes. You won't encounter Glyde if you fight Papyrus, so head to the door before the Papyrus battle.
| How to Defeat and Spare Papyrus |
So Sorry 【Hotland】
| Location | Hotland |
| Conditions | ・Device time is between 8:00 PM and 9:00 PM on October 10th ・Have visited the MTT Resort |
So Sorry is a monster that appears in the area with a cactus in Hotland R2F only when the device's time is between 8:00 PM and 9:00 PM on October 10th and you have visited the MTT Resort at least once. So Sorry can also appear if you change the time on your device, but please do so at your own risk.
Mad Mew Mew [Switch Exclusive]
| Location | Snowdin, inside Papyrus's house |
| Route | Neutral Route, Pacifist Route |
| Conditions | ・Clear friendship event with Papyrus ・After Mettaton EX battle ・Defeat LR stick together in front of the blue and red door ※Exclusive to the Switch version |
Mad Mew Mew is a monster that only appears in Snowdin, inside Papyrus's house, after the Mettaton EX battle in both the Neutral and Pacifist routes. To enter Papyrus's house, you need to have completed Papyrus's date event.
| Playing Undertale on Different Platforms - Differences and Recommendations |
| How to Find and Spare Mad Mew Mew |
Hidden Boss
| Monster | Details / How to Spare |
|---|---|
Temmie |
【Details】 ATK: Slap DEF: Slap【How to Miss】 ・Talk ・Flex and Aaron appears, Temmie escapes, and Aaron also escapes when you Flex ・Give Temmie Flakes ・Equip Temmie Armor |
Temmie 【 Waterfall 】
| Location | Waterfall |
| ATK | Slap |
| DEF | Slap |
| Route | All routes |
When Temmie appears, a text appears that says "Special enemy Temmie appears here to defeat you!!" Despite this, Temmie is a regular monster in Waterfall, not a boss. Encounter Temmie in both Pacifist and Genocide routes—spare in Pacifist, defeat in Genocide.
List of Useful Guides
Story-related Guides
| Story Routes and Branches | Story: N Route |
| Story: P Route | Story: G Route |
| Dating (Friendship) Events | Papyrus's Date |
| Undyne's Date | Alphys's Date |
| Temmie Village | Hard Mode |
| Endings: N Route |
Helpful Guides
