For episodes 1 and 2, Henry was inteligent. Since episode 3, Henry has been foolish and Funny later in season 2 he has been Stupid, and a Kind Idiot of TOMY Thomas and Friends.
Season 1--- Prolouge, April Fools, Secret Tender Club, Edward's Mess-Up, Tricked or Treat, and Percy on the Run.
Season 2--- A Shade of Orange, Christmas, Knock-Out Thomas, Business Trip, Gameshow Carnival: Friends Fornever, and Whack-a-Mole-Ron.
Season 3---Donut Unto Others, Gameshow Carnival 2: Roof-top Stranded, 150th Video-Verresry, 145.5, and Trimag x TOMY Thomas and Friends crossover.
- When he became stupid he sounds like Ed from Ed Edd n Eddy.
- From Gameshow Carnival 2: Roof-top Stranded onwards Henry’s old TOMY model was replaced by a new 2010-2012 Fisher-price TrackMaster model.