This a list of unseen characters who exist within Danny Phantom, but have not properly appeared in the series.

Grandpa Fenton

Grandpa Fenton is the grandfather of Danny and Jazz Fenton. He was only mentioned once, in "Splitting Images," by Danny when he entered the Ghost Zone for the first time, "It's like I dropped into Grandpa Fenton's yearbook."

Judging by his son, Jack Fenton's story from the first episode Grandpa Fenton had lived in a log cabin in Farmer City, Illinois with his family. He had discouraged his son from wanting a pony as the family had to eat horse meat during a war. These details could possibly be untrue as his son has a love of rambling.

However a known detail about him (besides the Ghost Zone looking like his old yearbook) is he has a ancestor from the Salem Witch Trials who looks very much like his son, John Fenton Nightingale. John's obsessiveness towards the supernatural - in this case witches - and Jack's obsession of ghosts implies paranormal contact runs in the family.

Jasmine the cat

Jasmine the cat is Jack Fenton's cat in the alternate timeline of "Masters of All Time." Earlier in the same episode, Jack remarked that he thought the name "Danny" was dumb, revealing that it was probably Jack who named Jazz and Maddie who named Danny.

Ricky Marsh

Ricky Marsh was a student that Tucker once blamed for throwing up in Sam's lunch, when Tucker himself was actually the culprit. Sam apparently kicked Ricky off the monkey bars for what she thought he did. In "Splitting Images," Danny uses this story to convince Sam and Tucker that it is him, and not Sidney Poindexter.

Tucker's grandmother

Tucker's grandmother is mentioned in "Mystery Meat" when Tucker first spots the Lunch Lady Ghost and says that she looks a little like his grandmother.

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V - E - H - DCharacters in Danny Phantom
Danny Phantom | Jack Fenton | Jazz Fenton | Maddie Fenton | Sam Manson | Tucker Foley
Andy | Archer Ghost | Bertrand | Box Ghost | Brenner | Bullet | Clones of Danny | Dark Danny | Desiree | Download | Elastica | Ember McLain | Executioner Ghost | Eyeball ghost | Femalien | Fran | Freakshow | Fright Knight | Ghost Writer | Hotep RA | Johnny 13 | Kitty | Lunch Lady Ghost | Lydia | Medusa | ‎Monster Cat | Nightmerica | Nocturn | Operative K | Operative O | Pariah Dark | Pariah's soldiers | Penelope Spectra | Prince Aragon | Shadow | Skulker | Skulktech 9.9 | Sleepwalkers | Sullivan | Technus | Terminatra | Thrash | Tucker Phantom | Undergrowth | Vid | Vlad Plasmius | Vortex | Vulture Ghosts | Walker | Youngblood | Youngblood's Assistant
Clockwork | Cujo | Dani Phantom | Frostbite | Pandora | Princess Dorathea | Wulf
Other Ghosts
Amorpho | Baby Face Boyle | Behemoth | Box Lunch | Crystal Leviathan | Dairy King | Ectopuses | Ember's ghost band | Empress She-Wolf | Gas mask ghost | Ghost Snake | Ghost Wolf | Ghost Worm | Klemper | Observants | Poindexter's classmates | Scarlet Samurai | Sidney Poindexter | Sojourn | Walker's goons
Other Humans
Agent Alpha | Alicia | Casper High lunch lady | Connie | Damon Gray | Dumpty Humpty | Grandpa Fenton | Harriet Chin | Hazmat agents | Hobson | Ida | Irving Burns | Jasper | John Fenton Nightingale | Lance Thunder | Madam Babazita | Mayor Montez | Mr. Falluca | Mr. Lancer | Nate | Operative L | Operative M | Principal Ishiyama | Sam's Parents | Ms. Tetslaff | Tiffany Snow | Tracey | Tucker's grandmother | Tucker's Parents
Ashley | Blond male student in green sweater vest | Blue capped male student in orange | Boy with purple hair | Brittany | Dale | Dash Baxter | Elliot | Girl with braces | Hannah | Jock with braces | Kwan | Male student in flash jersey | Male student in red stripes | Male student with green beanie | Mia | Mikey | Nathan | Paulina | Rebecca | Red hoodie male student | Ricky Marsh | Sarah | Spike | Star | Tiffanie | Valerie Gray
Delilah | Jasmine the cat | Maddie the cat | Pookie | Scaredy Cat