|Bob's Burgers character|
|Occupation||Music teacher at Wagstaff School|
|Behind the scenes|
|First||"Work Hard or Die Trying, Girl"|
|Voiced by||Brian Huskey|
She first appears in Work Hard or Die Trying, Girl where she defects to Gene's Die Hard musical after being replaced by Doug Wheeler for Courtney's Working Girl musical after playing piano for the school musical for 24 years.
In The Itty Bitty Ditty Committee, Gene enlists her to help him become a better musician.
In The Gene and Courtney Show she is hired by Ms. LaBonz to accompany her on bongos during her morning announcements in an attempt to get one over Gene and Courtney but doesn't have any lines. She is also seen briefly in The Hormone-iums playing piano at a Hormone-iums rehearsal. She plays piano during The Quirky Turkey in "The Quirkducers"
She appears to be very adept at playing many musical instruments including piano, ukulele, guitar and percussion.
- A character very similar in appearance to Ms. Merkin appears playing piano during Electric Love in Topsy. She has shorter hair, doesn't wear glasses and doesn't wear her pants high, otherwise their appearances are identical.
- The Gene and Courtney Show (non speaking cameo)
- The Hormone-iums (non speaking cameo)
- Glued, Where's My Bob? (appears on end credits sequence)
- The Quirkducers (non-speaking cameo)