|Skin color||Brown / light brown (headpiece/shoulder pads), gray (body)|
|First appearance||Chapter 25, Page 3|
|Last appearance||Chapter 25, Page 7|
|In real life|
|First appearance||Tails Gets Trolled|
Chapter 25, Page 3 (2021)
|Franchise||Tails Gets Trolled|
M-13 is a character appearing in Tails Gets Trolled.
M-13 is first seen in the series working as a bartender at Hallow's End, serving The Narrorator a drink. After Ms. Frizzle's meeting with Saralite concludes, he then notifies Spongebob and Patrick and sends them to meet with the witch.