"Uh, in case you haven't noticed: I'm cute!"
Yo is a Japanese-American girl with an obsessive crush on Chum Chum, much to his best friend's annoyance. Despite her antagonistic relationship with Fanboy, who she often argues and fights with, she's really just a kind-hearted girl: sweet, fun, and prepped for adventure. Her background is obscure, and as for her family, only father has been briefly mentioned.
Yo is sweet and gentle (if not a bit intimidating). She is a collector of all things adorable. She owns a hoard of Yamaguchi digital pets, one of which is named Scampers.
As a collector of all things adorable, she routinely tries to kidnap Chum Chum from Fanboy, often with the plan to dress him, brush his hair, and shelve him alongside her other toys. More often than not, it's the job of Galaxy Hills' superfan to rescue him from her clutches.
Yo is a talented prankster, dominating Fanboy in multiple forms of revenge when the annual Prank Day comes around.
Yo is naturally cheerful but becomes crazed and obsessive when she interacts with Chum Chum. She is a master manipulator, using her sweet demeanor to collect large amounts of money from lemonade stand costumers, trick Fanboy into handing over Chum Chum for an awesome Mecha Tech gadget, and stop Man-Arctica from freezing the citizens of Galaxy Hills (unsuccessfully).
In later episodes, she gradually grows into a calmer, kinder character. Whereas in the first season she is very aggressive toward Fanboy, hurting him severely on multiple occasions in pranks and fistfights. She's a lot more kinder in the last season, showing compassion toward her frenemy, offering him advice, and asking him for help. She even grows close to Chris Chuggy in Robo-Mance and accepts his hand and valentine.
Yo is tall and rounded with light-pinkish-apricot skin. She has short, jet-black hair with bangs that dent on the right side, in a two pigtail hair-do with pink hairbows.
She wears a yellow and pink shirt with a smiley-face on it, a pink and green plaid skirt, and yellow and pink high-top shoes. Her frog backpack is her trademark but is seen without it on occasion.
|The image gallery for Yo may be viewed here.|
- She owns a variety of Yamaguchi digital pets. Scampers, one of them, seems to have lived a long time.
- As a pirate, she goes by the name "Lady Revenge" (Fanboy A'hoy!).
- She has a castle dollhouse (The Incredible Shrinking Fanboy).
- She has a major crush on Chum Chum and wants desperately to play with him to Fanboy's dismay. She's shown doing this for most of Season 1 but in Season 2, she doesn't seem to do it anymore.
- Her best friend beside Ingrid is Lupe.
- She first appeared in the pilot episode, at one of the desks eating lunch, while her first speaking part was in the first part of the third episode.
- She has a pinecone named Ingrid who is her "best friend" (Prank Master).
- She seems to be a real good prankster, especially when it comes to Fanboy (Prank Master). For every prank, she uses the phrase, "In Yo Face!". She then slaps a sticker on your forehead.
- She can be brave when she's in the graveyard (Fanboy A'hoy!).
- She gave Chum Chum gift box rocket boots for his birthday (Present Not Accounted For).
- "Brain Drain" reveals she owns a transporter cell phone made by her dad.
- She served as the "communications" on Fanboy's rescue mission in "Saving Private Chum Chum".
- Yo only has a speaking role in six episodes of season 2, making that season her shortest role to date.
- "C'mon, Fanboy! I just wanna be with him a little bit!" - the first line, Trading Day
- "But he's just so cute and Chum-Chummy!" - Trading Day
- "Fanboy, you're my last hope! I need someone to watch my cat tonight, because my cousin's coming over, and she's allergic. Please! You gotta help me! YOU GOTTA HELP MEEEEEE!" - Digital Pet Cemetery
- "It's so easy!" - Digital Pet Cemetery
- "WHAT did you DO to my SCAMPERS?!?" - Digital Pet Cemetery
- "Hey, I'm studying!" - I, Fanbot
- "Isn't that Santa Claus?" - Night Morning
- "In Yo Face!" - Prank Master
- "I guess I’ll just have to...TELL EVERYONE I SEE ABOUT YOUR SECRET --" -- Fanboy A'Hoy!
- "Did you hear that? This is your chance. You can finally get Fanboy out of the way and have Chum Chum all to yourself! DON'T MESS IT UP. Okay, I won't! Just stop yelling, alright?!" - The Incredible Shrinking Fanboy
- "Aw, I knew it was too good to be true." - The Incredible Shrinking Fanboy
- "On your feet, MAGGOTS!" - Saving Private Chum Chum
- "Fanboy, I'd love to chat, but we have a lot of customers who were here before you." - Battle of the Stands
- "Is it behind that collapsing outhouse?" - Battle of the Stands
- "I'm not authorized to say!" - Present Not Accounted For
- "Wait, did you say he likes me?" - Heroes vs. Villains
- "Thank you, SuperChum!, I owe you a romantic dinner at my favorite restaurant." - Heroes vs. Villains
- "Would you boys pass these notes to every girl in the class, but don't read them, they're for girls only." - Face-Eating Aliens From Planet X
- "I know, we're Head-Eating Aliens." - Face-Eating Aliens From Planet X