Optional boss
Baby Teeth
Last checked 2026-11-03
Baby Teeth is Joel’s sister and an optional boss in apartment 32 on Floor 3. The row I will print is 320 HP and 18 attack. Recruiting Joel is a day-2 or day-3 conversation. Fighting her is not that conversation.
At a glance
Source coverage: 1 independent source, Miraheze Baby Teeth; checked 3 November 2026. Empty cells mean the referenced table does not supply that field.
| Field | Publicly documented detail | Status |
|---|---|---|
| Role | Optional boss | 1 source |
| Location | Floor 3, Apartment 32 | 1 source |
| Phases | Turn 1 always cries; sheds a tooth on turns 3/5/7/9 (Rotten Teeth on Cursed turns 3/7); below 60% HP enters a tantrum and uses Rage Bite; below 30% changes pattern again. Second fight (Baby Teeth II) is in Teeth Hell. | 1 source |
| Weakness | Weak to Piercing (150%); resists Slashing (50%); immune to Shadow | 1 source |
| Reward | Jawbone Club; Teething achievement if defeated before day 9 | 1 source |
The apartment changes around her
Joel’s face and chest are a mouth because she bit him. That is the family fact. His recruit window closes when he stops being lucid on day 4, and the apartment door’s schedule on the gameplay page says apartment 32 shuts on day 5, then opens again later into Teeth Hell on day 9. I am not going to tell you the day-9 room is the same tutorial as the day-2 sofa. The calendar is the mechanic.
Best outcome is a search of its own. The public pages describe a sister, a bite, and a boss. They do not give me a single “correct” dialogue tree I can rank above the wiki. I will not label a YouTube thumbnail’s ending as best. If you want Joel in the party, use his page and the early days. If you want the fight, this is the room, and it is optional relative to the endings table.
No weakness percentage is published next to 320 HP. Toothpaste is a Cursed-mode trust item for Joel, six tubes, and it is not a damage type against his sister. I keep the toothpaste on his recruit and off her health bar.
Teeth Hell is the later name for the reopened apartment. Charlie and Marvin’s full mutations are dated to day 9 on the same calendar. They are neighbors of the date, not phases I can assign to Baby Teeth’s health bar.
A second fight is something players search. The wiki’s day list supports a return visit. I will not invent a second HP total for that visit. One printed row is the row.
Questions
Where is Baby Teeth?
Apartment 32 on Floor 3.
Is she required for an ending?
She is an optional boss. Ending conditions are on the endings page, and she is not one of the four offerings.
Related
Sources
- Miraheze — Baby Teeth checked 2026-11-03
- Miraheze — Joel checked 2026-11-03
- Miraheze — Gameplay checked 2026-11-03