This can go on forever really as many film and television especially american focus on affinity with trains. Also model trains only verus live trains
David, the director of public prosections from 'Crownies' - many bachmann and lima in office and frequently highlighted. Whoever bought the models for the show knew exactly what to buy as he had a Lima 3830, Santa Fe and Union Pacific Locomotive too. HO or O Gauge . Made a mess of them a few times.
Dr Mallard from NCIS - namesake Hornby model. In an episode not that long ago ducky is oiling his maintaining his model using surgical syringes and tweezers
Pete? the dad from Alf.
Tom Cruise's character in Risky Business
A very notable one is Bobby "Bacala" Baccalieri from the Sopranos. He has an American Flyer set in his garage and is sometimes in full choochoo mode with hat when Tony Soprano calls him. Bobby tried to get his goth son interested but did not care. A few times the mob made fun of his hobby. Bobby was gunned to death while in a hobby store purchasing a rareAmerican Flyer train set. He did not really get into trains until the later seasons until he settled with Tony's sister. Whatever Gauge that is.
Malcom counts as he had models of trams, especially at the begining of the film when his flatmate visits. HO or O?
Doc Brown does not really count as a model train buff. Although he expressed his desire to be an engineer he only modeled the Hill Valley railway because he is a a scientist. Go back through the trilogy he apologises for his models not being 'to scale'
The game trilogy also highlights this as it shows off additional dioramas he has built. . He is just pedantic and accurate not neccessarily a model railroader.
When did Lex Luthor have a trainset? Either of the Lex Luthors from any of the movies live or animated.
There are many fictional Japanese series about gunzels and railfans. Theyd count. they do show models in those. HO Guage or N
The Stig is a closet railfan but will never admit what gauge is his favourite.
Itchy and Scratchy battle each other using model trains.
Any movie with a rich person or kid might have model trains in it.
Real trains a little easier than model to remeber eg The number of times Bugs Bunny, Road Runner and Wile E Coyote battle each other using trains has got to count.