He is the laughing stock of the Ghost Zone. Usually serving as a cameo, The Box Ghost first appeared in "One of a Kind". Box Ghost makes his attack on a warehouse, returning by the end of the same episode by entering Danny's class only for him to be defeated again. In "Splitting Images", the Box Ghost makes the attack on Danny in the beginning of the episode and actually manages to best him. The Box Ghost returns in the end with his new name, "The Mechanical Frog Ghost", but he immediately changes his mind when the mechanical frog malfunctions. In "Prisoners of Love", he meets Danny at an area in the Ghost Zone where human-world objects are kept. Walker and his lackeys eventually arrest them both. In prison, the Box Ghost and all the other ghosts teamed up with Danny to escape.
He made a brief appearance in "Lucky in Love" while Danny was on a picnic with Paulina (actually Kitty in disguise) only to be beaten up by Danny to impress her. He showed up briefly in "Life Lessons" where he was used as bait by Skulker to lure Danny and Valerie, chased by the latter in the end. He returned in Reign Storm where he displayed his new power to control bubble wrap. He, along with the other ghosts, teamed up to stop Pariah Dark. He briefly appears in "Identity Crisis", taking offense to Danny and his friend's lack of care towards his already low level of threat.
In the alternate future of "The Ultimate Enemy", he and the Lunch Lady ghost are married and have a child (humorously called Box Lunch). His future self is muscular, and had an eyepatch and a hook, due to injuries sustained by Dark Danny. He is considerably more dangerous and violent in this future. He is also more powerful than his present self, able to fire cube-shaped ectoplasmic constructs of destructive energy. It should also be noted that this version is no longer the comedic relief he once was but a more serious, sadistic old man who wants nothing other than revenge. As a side note, he is quite possibly the leader of the future version of Danny's ghostly enemies as he attacked Danny the most.
Box Ghost is one of the ghosts who helped Danny save Christmas in "The Fright Before Christmas". He later makes another appearance in Secret Weapons, where he traps Tucker and Sam and fights Danny. He ends up escaping after Danny was sucked into the Fenton Thermos (yet again) by his sister Jazz.
His biggest (and only main) appearance took place in "Boxed Up Fury", when he steals Pandora's Box after frustration from the lack of fear he inputs in others, forcing Danny to seek her himself in order to stop him. They eventually succeed, with Pandora ultimately forcing the Box Ghost to tidy up the mess he created.
The Box Ghost's final appearance is in the series finale, Phantom Planet. He is seen only briefly on a few occasions, once being defeated by Vlad's team of Ghost Hunters, the Masters Blasters, and again as one of the many ghosts to help Danny turn the entire planet intangible so that an asteroid can pass through it.
Appearance in UltimaEdit
The Box Ghost appears a few times in the Ultima series usually in cahoots with other ghosts or just as a test dummy for Organization experiments.