The Extreme Ghostbreakers are one of the best-known ghost hunter groups. They are a two-member "extreme" team who come to Amity Park during "The Million Dollar Ghost" to try to capture Danny Phantom and claim the million-dollar bounty.
- Main article: The Million Dollar Ghost
When Vlad places a million-dollar bounty on Danny Phantom, the Extreme Ghostbreakers show up in Amity Park on high-tech ATVs. They try to catch Danny, but Danny ends up catching them and throws them into a dumpster with the other ghost-hunting groups.
Sullivan is the male member of the Extreme Ghostbreakers. He uses surfer lingo, and often calls Brenner "dude" or "the man," forgetting that she is a girl.
Brenner is the female member of the Extreme Ghostbreakers. She has a blonde ponytail and wears braces.
- The Extreme Ghostbreakers are a spoof of the Extreme Ghostbusters, the next generation after the original Ghostbusters.