The Fenton Ghost Catcher is a ghost-removing device that separates ectoplasmic energy from people (when ghosts have overshadowed them), objects, and places. It resembles a huge dream catcher; the net or web in the center is designed to act as a filter.
The Fenton Ghost Catcher is first seen in "What You Want" when Danny accidentally flew through it, causing his human and phantom forms to be separated. However, Danny Phantom immediately flew back inside Danny Fenton, causing them to reunite. Later in the same episode Danny uses the Fenton Ghost Catcher to separate the evil, Desiree-created Tucker Phantom from regular Tucker Foley.
It later reappears in "Identity Crisis." Danny intentionally uses it to split himself in order to multitask, and in the process split his personality, resulting in the slacker human Danny Fenton and the over-heroic ghost Danny Phantom. Attempts to reverse the process by simply having Danny Phantom enter Danny Fenton like last time failed. This may be because of the length of time that had elapsed since Danny had split himself, as opposed to last time when he instantly recombined. They then attempted to reverse the split by going through it again, which only resulted in dividing their human and ghost sides unequally. While the two could both be human and go ghost, their powers were limited, with one being able to turn intangible and the other able to fly and use ecto-blasts. They eventually find at the end of the episode - while the two are fighting Technus and get swept through it again - that the device has two sides, "merge" and "separate."
- 106. "What You Want"
- 206. "Identity Crisis"