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 the Island of Sodor, Thomas was chosen to take her to the theatre, but after Alicia Botti discovered a mouse in Clarabel and screamed so loudly that 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 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)
- Season 18 - Emily Saves the World (not named; mentioned)
- Jules de Jongh (UK/US; thirteenth season onwards)
- Her television series model is currently on display at Drayton Manor.
- In Play Time, she vocalises "Habanera".
- In the CGI series, her coat gained buttons, which only ever appeared previously on her posters in the sixth and eighth seasons. She also gained lipstick.