A voice actor who got her start in ChalkZone and Teen Titans (2003), Heidi Hynden Walch (born February 1, 1971 in Davenport, Iowa) is best known for her moe and overly-cutesy voice roles. (Her type is played with when she voices Starfire on Teen Titans, who is very sweet and naive but is a superhero who can kick ass, and Princess Bubblegum in Adventure Time, who is a genuinely good person but hides a lot of anxiety, cunning, and ruthlessness behind her Princess Classic façade).
Keep in mind that while she does have a fair share of anime roles (i.e. Yutaka Kobayakawa in Lucky Star and Emiri Kimidori in The Melancholy of Haruhi Suzumiya), most of her voice work is predominately in Western Animation and Video Games.
Has a Twitter account.
- Ace in Justice League and Justice League Unlimited
- Ainslee Wickett on The Everstar
- Alice May in Scooby-Doo! Mystery Incorporated
- Alice and Wendy in all Disney productions following Kathryn Beaumont's retirement from the roles in the mid-2000s.
- Amy Stapleton in IGPX: Immortal Grand Prix
- Becky Thatcher in Tom Sawyer
- Breach in Generator Rex
- Ch't in Broken Age
- Coco Bandicoot in Crash Team Racing
- Debbie, the young bride, in Groundhog Day
- Emiri Kimidori and Sonou Mori in The Melancholy of Haruhi Suzumiya
- Harley Quinn in The Batman (she reprises the role in Batman: Assault on Arkham and Batman: Hush )
- Hitomi in the Dead or Alive volleyball subseries
- Jasmine and Junko in Viewtiful Joe: Double Trouble
- Jean Grey in The Superhero Squad Show
- Jenny McBride in The Secret of NIMH 2: Timmy to the Rescue
- Jynx in Tony Hawk's Downhill Jam
- Katilda in Catscratch
- Mae Capone in The Untouchables (1993 television series)
- Elsie the cat in Disney's Stanley
- Nia Teppelin (pre-Time Skip) in Tengen Toppa Gurren Lagann
- Penny Sanchez in ChalkZone
- Princess Bubblegum in Adventure Time
- Starfire, Blackfire, Argent, and Madame Rouge in Teen Titans (2003)
- Talim in SoulCalibur 3 and 4
- Valina from Super Robot Monkey Team Hyperforce Go!
- Viridi, Goddess of Nature in Kid Icarus: Uprising and Super Smash Bros. for Nintendo 3DS and Wii U (replaced by Dayci Brookshire in Super Smash Bros. Ultimate)
- Yutaka Kobayakawa in Lucky Star
- Summer Hugglemonster in Henry Hugglemonster
- Bubble Monkey and Nikki the piggy bank in Doc McStuffins
- Jean and Lena in Big Top Scooby-Doo!
- Mitzi Capaletto in LEGO Scooby-Doo! Blowout Beach Bash
- Amy in Transformers: Rescue Bots
- Supergiant in Avengers Assemble and Guardians of the Galaxy (2015)
- Elasti-Girl and Princess Perdita note in Young Justice (2010)
- Additional Voices in Once Upon a Studio
Tropes Associated With Hynden Walch:
- Acting for Two: In Teen Titans (2003), she voiced Starfire, Blackfire, Argent and Madame Rouge.
- Same with the spinoff Teen Titans Go! and also did Mother Nature, Sparkleface, Erifats, The Whisperer and other background characters.
- Endearingly Dorky: She plays a lot of characters that are either naive or endearing nerds, and yet are still likable and charming.
- Pigeonholed Voice Actor: WALCH-CHAN!! WHY SO MOE~?!
- When she first told her friends she was voicing a character named Princess Bubblegum, their response was, "Aren't you already?"
- Shout-Out: In Issue 2 of the Adventure Time Comic Book series, Marceline calls Princess Bubblegum "Hynden" at one point.