- Jason Marsden has appeared in three different T.G.I.F. shows as three separate characters. Guest starring on Full House, have a recurring role on Boy Meets World and having a semi-regular role on Step by Step.
- Jason Marsden is consistently either mistaken for or as being related to actor James Marsden. Though they are not related, the constant mistake has led to a close friendship between the two actors.
- Jason's hobbies are ice-skating, rollerblading, drawing, swimming, and collecting Disney videos.
- Jason Marsden's character in Boy Meets World has the name as his own.
- He did the voice of Haku in the English version of Spirited Away.
- Jason Marsden is not a fan of Star Trek.
- His father, Myles Marsden, is a choreographer.
- Jason Marsden has over 70 credited voice-acting roles.
- Jason Marsden was credited on a game as early as 1998 and as recently as 2004.
- Jason Marsden played "Tino" and Phil LaMarr played "Carver" on The Weekenders. Then a few years later, Phil LaMarr played "Virgil/ Static" and Jason Marsden played "Richie/ Gear" on Static Shock.
- Latest Movie Role: Mickey's Twice Upon A Christmas.
- There are many fansites devoted to Jason Marsden.
- Eye Color: Brown
- Height: 5' 4"
- He had a long time job as a recurring character on Justice League, as Snapper Carr, a TV reporter that was frequently seen.
- Since Step by Step, Jason has provided voices for numerous animated television shows and computer games.
- Jason Marsden's first voice-acting role was Cavin in the animated series, The Adventures of the Gummi Bears.
- His father, Myles, found the Rhode Island State Ballet.
- Jason Marsden played as young Burt Ward in Return to the Batcave: The Misadventures of Adam and Burt.
- Jason Marsden played TV best friend to Will Friedle on Boy Meets World, even though he really is in real life.
- His latest voice-over appearance was on Toon Disney, he reprised his role as Tino Tonitini for a The Weekenders commercial.
- Jason Marsden's latest live-action appearance was on Even Stevens. He played a manager for a toast serving resturaunt.
- Jason Marsden narrates for Toon Disney.
- Jason played one of the lead roles on Lion King II: Simba's Pride, Kovu.
- Jason Marsden started his TV career in 1987.
- Jason Marsden reprised the role as Maximillion "Max" Goof for the 3-D animated Disney film, Mickey's Twice Upon A Christmas.
- He was married to Christy Marsden on October 2, 2004.
- He replaced Frankie Muniz as the voice of Chester from the Nickelodeon series, The Fairly OddParents.
- Former child stars, such as Scott Curtis from Aaron's Way (1988) and Danica McKellar from The Wonder Years (1988), attended his wedding.
- He attended D. Russell Parks Junior High School in Fullerton, California, in Orange County.
- He graduated from high school at age 16.
- He reprises his role as Tak in the video game Tak 2: The Staff of Dreams.
- He provides the voice of Tak in the hit video game, Tak and the Power of Juju.
- His role as Rich Halke from Step by Step is what made him a household name.
- Jason Maderson's first major role was in the TV series, General Hospital, as Alan Quartermaine Jr.
- His friends' parents noted how talented and personable Jason Marsden was, suggested he get an agent, and do some acting work in commercials.
- In recent years, Jason Marsden is probably best known for his voice over work on the various DC Warner Bros. animated series such as Justice League, Static Shock, Batman Beyond and The Batman.
- Since he is a huge Walt Disney fan, he named his pets Aladdin, Jasmine and Lady.
- He made a physical appearance in The Fairly Oddparents TV movie, Channel Chasers.
- He voiced of Maximillion "Max" Goof in both Disney movies, A Goofy Movie and An Extremely Goofy Movie.
- He has 2 older half-brothers named Rick and Mark, 1 older half-sister named Ana, and his parents' names are Myles and Linda.
- Jason has also voiced a character in the Xbox game, Star Wars: Knight of the Old Republic. He voices Dustil Onasi.
- Jason Marsden voiced Lilacor and Ajantis in the video game, Baldur's Gate.
- Jason Marsden's wife is a friend of James Marsden's fiancee.
- When he got married in 2004, his best man was actor Will Friedle.
- He was the voice of Brejik of the Black Vulkars in the video game, Star Wars: Knights of the Old Republic, as well as extra NPC's.
- Jason Marsden: It's not like a corporate job where the more you accumulate on your resume and the more hours you put in, the higher up you get; it's simply not the case. That being said, if I had known that and known what kind of career I'd get into, I still would have pursued it.
- Jason Marsden: Voice-acting, on the fun meter, is off the scale. You show up, you don't have to be all primped up, or dressed up. And you get to work with some amazing people, and goof off for four hours.
- Jason Marsden: I'm more of a visual person, but I think that reading's extremely important. But I'm very easily distracted. It takes certain books to really grab you in.
- Jason Marsden: I collect action figures, mostly. I have a Batman room, with just Batman stuff, and I have a Disney collection.
- Jason Marsden: Everyone loves Disney, it just has a special place in everyone's heart.
- Jason Marsden: All the voiceover actors that I've worked with are the most down-to-earth, charismatic, unaffected people, and the most talented people you could ever have the pleasure of knowing.