Too-Ticky is active, optimistic, and interested in all things. She is seen as very knowledgeable, practical, and wise, and is a good problem solver. She has a major role in some comic books and newspapers and books, The Magic Winter, but does not appear in all the Moomin books. She doesn't hibernate during the harsh winter. Too-Ticky's outfit is a red and white striped sweater and a red bonnet (blue from the inside) with a red pom.
Her first appearance is in Moominland Midwinter, where she teaches Moomintroll about winter when he wakes up during hibernation. She is also featured in a short story in Tales from Moominvalley, and in The Dangerous Journey, where she pilots a balloon.
In Moominland Midwinter, Too-Ticky together with Moomintroll and Little My build a horse out of snow for the Lady Of The Cold. Little-My definitely wanted to see the Lady up close, although Too-Ticky warned her against her icy gaze. Too-Ticky also warned a little squirrel, who forgot her warning and the Lady's gaze froze him.
New Moomin (1972)
- The Memoirs of Moominpappa
- Pointless Disturbance is Pointless
- The Invisible Child
- The Invisible Friend
- Moomintroll and Little My's Winter Adventure
- The Winter Visitors
- Midwinter Bonfire
- Yoshiko Yamamoto - New Moomin
- Mariann Nordwall - Mumindalen
- Mika Doi - Moomin (Japanese dub)
- Stacey Greg (some episodes), Emily Stride (episode 37) - Moomin (English dub)
- Katie Leung - Moominvalley (English dub)
- The character and her name are modeled after Tuulikki Pietilä, author Tove Jansson's wife/life partner.
- Despite being very human in overall appearance, she is consistently depicted as having black, rodent-like feet, and walks barefoot. The only exceptions to this are Shin Mumin and Tanoshii Mūmin Ikka, in which she always wears shoes or some sort of footwear.
- Too-Ticky is canonically female, though her unconventionally boyish appearance can be a source of confusion for some readers and viewers.
- The english dub for Opowiadania Muminków seems to acknowledge this, with the narrator (Richard Murdoch) referring to Too-Ticky by male pronouns instead to prevent confusion in young english-speaking audiences. This is the only case of a televised adaptation doing so.