I made a few characters, actually! They're for Rhythm Heaven MegaRemix's Bonus World.
Name: Tenna
She's the long-haired girl with headphones from the Tengoku/Heaven vocal collection. Her favorite game is Bon Ordoi. Her tower is Heaven Tower (Games from Tengoku, not Heaven). Her games: The Snappy Trio, Night Walk 2, Marching Orders 2, Toss Boys 2, Sneaky Spirts 2 (GBA), & Heavenly Remix (Remix 6 GBA). She likes nostalgia & dislikes low-quality audio.
Name: Goldie
She's the DS-holding girl from the start screen of Heaven. Her favorite game is Fan Club 2. Her tower is Golden Tower (After Heaven's Japanese name). Her games: The Dazzles 2, Jumpin' Jazz, Glee Club 2 (DS), Space Soccer 2, Shoot-'Em-Up 2 (DS), & Gold Remix (Remix 10 DS). She likes handhelds & dislikes lost styluses.
Name: Minnie
The girl from the start screen of Fever. Her favorite game is Tap Troupe. Her tower is Fever Tower. Her games: Samurai Slice 2, Double Date 2, Cheer Readers 2, Screwbot Factory 2, Packing Pests 2, & Fever Remix (Remix 10 Wii). She likes straps & dislikes gimmicks.
Name: Ms. Plus
She's actually the same orange-haired girl holding a microphone from another album cover. Her favorite game is Karate Man Senior. Her tower is Mega Tower, and the games are Tongue Lashing 2, Fruit Basket 2 (Original game with Story Fruit Basket textures), Second Contact (Second Contact textures with new cue-set), Pajama Parade (Pajama Party 2), Monstrous Tennis X (sequel to a new game), & Mega Remix (Remix of all original games, plus the five new games added). She likes the C-Pad & dislikes Quiz Show.
BUT WAIT! THERE'S MORE!
Name: Grandma Finale
She's a fully original character. The guardian of the final area, she watches over Bonus World for worthy people. Her flow is 110, higher then what's normally available. She doesn't have an tower, but she still has games. They are: Bon Dance, Rockers 2, Love Rap 2, Karate Couple (Karate Man Senior 2), & Giga Remix (A remake of Rhythm Heaven Gigamix, with Rockers & the five new games). After completing Giga Remix with a Superb Rank (she won't accept OKs), Grandma calls you better then the Rhythm League, and makes you a official member. Afterwards, a festival starts in Rhythm Heaven, and you get to meet all of the characters in the series.