- Mr. & Mrs. Keneipp -- Mr. Ray
- Mr. Ray & Friends -- Mr. Sonic
- Mr. Sonshyne -- Mr. X and Mrs. Y
- Mr. X & Mr. Y -- Mrs. Franset
- Mrs. Fun -- Ms. Jackson
- Ms. Jade -- MsRea
- ms.right -- Muck
- Muck -- Mugsy
- Mugsy Croftshire -- Muletrain
- Mulfloni -- Mun Huijun
- Mun Jieun -- Munro
- Munro -- Murdoch
- Murdock -- Muren