|Quit pushing me, V-man.|
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In "Bitter Reunions," Jack responds to Jazz's questions about their childhood, specifically their college days, by pulling out an invitation to a Wisconsin University college reunion and suggesting they attend. A majority of the episode is used to reference an incident that happened between Jack and Vlad Masters that strained their relationship.
In " Masters of All Time, " Danny travels back in time to this college. People in stereotypical 80s clothing are seen all over the courtyard including one individual that is break dancing while a crowd watches on. There he sees the campus bulletin board with a green flyer announcing a "Ghost Portal Experiment Room 101 Science building . Danny is seen phasing through the roof of said classroom where the younger versions of Vlad Masters, Maddie and Jack Fenton are seen setting up the ghost prototype. In the original timeline Vlad receives a blast of ectoplasmic directly to the face, afflicting him with ectoacne, and causing to run out of the room in panic. In the altered timeline Vlad is pushed out of the way by Danny, Vlad saves Maddie, the blast ricochets, it hits Jack, and infects him with ectoacne. This causes Jack to run out of the room in panic
- 107. "Bitter Reunions" (mentioned)
- 216. "Masters of All Time"
|Locations in Danny Phantom|
|Realms||Earth | Ghost Zone | Outer space|
|Towns and cities||Amity Park | Elmerton|
|Private property||Fenton Works | Foley Residence | Emergency Ops Center | Mayor's Mansion | Vlad Masters' mansion|
|Municipal property||Amity Park Penitentiary | Amity Park Swap Meet | Casper High School | Guys in White headquarters|
|Ghost Zone||Aragon's Kingdom | Carnivorous Canyon | Far Frozen | Ghost Writer's Manor | Pariah's Keep | River of Revulsion | Skulker's Island | Walker's Prison|
|Outside Amity Park||Alicia's Cabin | Bermuda Triangle | Lake Eerie|
|Local business||24K Jewelry | Amity Park Lanes | Amity Park Mattress Factory | Bucky's Music Mega Store | Diner | Mr. Meat butcher shop | Nasty Burger | Skulk and Lurk|
|Companies||Axion Labs | Vladco|
|Misc.||Amity Park Mall | Floody Waters | North Mercy Hospital | Real-world locations | University of Wisconsin|