Alicia Botti is a world-famous Italian opera singer. She first appeared in the sixth season and has appeared regularly since.
When she first visited Sodor, Thomas was chosen to take her to the theatre, but after Alicia Botti discovered a mouse in Clarabel and screamed so loudly all the windows in Brendam were shattered, Percy was chosen to take her to the concert. She frequently appears in concerts at the Town Square.
- Season 6 - Thomas, Percy and the Squeak
- Season 8 - Percy and the Magic Carpet (does not speak)
- Season 11 - Toby's Triumph
- Season 13 - Play Time and Splish, Splash, Splosh! (does not speak)
- Season 14 - James in the Dark (vocalises) and Being Percy
- Season 15 - Wonky Whistle (cameo)
- Season 16 - Muddy Matters (cameo)
- 2004 - Thomas and the Squeak!
- 2008 - Toby's Triumph (speaks in speech bubble only)
- 2010 - Play Time
- 2011 - Being Percy (cameo)
- 2012 - Wonky Whistle (cameo) and The Fat Controller's Bedtime Story (Issue 650)
- 2013 - Being Percy (does not speak)
- Jules de Jongh (UK/US; thirteenth season onwards)
- Lena Meieran (Norway; thirteenth season onwards)
- Suzuki Fu (Japan; sixth season only)
- Nanaho Katsuragi (Japan; eleventh season onwards)
- Her television series model is currently on display at Drayton Manor.
- In Play Time she vocalises "Habanera".