Mr. Percival

Mr. Peregrine Percival, also called the "Thin Controller" ("Narrow-Gauge Controller" in the US), is the current manager of the Skarloey Railway. 

Appearances

Sodor Adventures

• Season 1 - Down the Bridge (mentioned) 
• Season 2 - Rheneas and the Dinosaur, Paul and Rusty and The Importance of Being Neville
• Season 3 - Mr. Jones, Paul and the Weedkiller, Don't Be Late!, and Luke and the Christmas Party
• Season 4 - Duncan and Victor (mentioned)
• Season 5 - Creepy Cutting and Smoke Signals

The Many Adventures on the Island of Sodor

• Season 1 - Duncan in Love, Rock 'n' Rolling Again, Luke's Lucky Find, Old Engine, New Changes, and Duke Does it Again
• Season 2 - Clean vs. Dirty (mentioned), Peter Sam and the Lost Engine, and The Search for Neil

The Adventures on Sodor

• Season 1 - Old and Wise, Dashing Duncan, Sir Handel and the Coal Mines (mentioned), Scottish Engines (mentioned), Skarloey Comes Home, Rheneas' Risky Ride, Bert's Milk Train (mentioned), and Rusty Rescue
• Season 2 - Trouble on the Line, The Return of Boulder, Duncan's Discovery, and The "Ghost" Warrior (mentioned)

Specials:

• The Great Storm of Sodor