I am still sticking with the theme of the animated series:
#296 - Despite Egon’s leanings toward science, his family has a history of witchcraft.
#297 - Three of Egon’s ancestors, Zedekiah, Eli and Ezekiel, were wizards.
#298 - Egon sometimes seems to be unaware of Janine's interest in him
#299 – There are 2 contradictory reasons for the Halloween Season
#300 – Egon has uncle named Cyrus
#301 – Egon’s Uncle visits him and, does not believe that Egon's a waste of Egon's genius
#302 – Egon grew up in Ohio
#303 - Egon had his soul switched with that of a demon,
#304 - Egon had his molecular structure destabilized to the point that it stranded him in the Netherworld
#305 – Egon had his intellect switched with Slimer's.
#306 – Egon was terrorized by the Boogieman as a child
#307 – Being stalked by the Boogieman was what inspired Egon to study the paranormal
#308 - Egon accidentally burned down his family's garage.
#309 – Egon turns 40 in 1997
#310 - Peter is the closest thing they have to one, and often makes the decision whether the Ghostbusters will take a case or not.
#311 - Peter originally opposed to the idea of Slimer living in the firehouse, but quickly develops a love-hate relationship with the him.
#312 - Peter's father was a con artist/businessman who couldn't make an honest dollar and was often away on business during Peter's childhood,
#313 - Peter’s father was a negligent, even manipulative father.
#314 - Peter has claimed to be a Scorpio
#315 - One of Peter's favorite hobbies is trains
#316 – Peter studied engineering in college for two years before finding out it had nothing to do with trains.
#317 – Peter wishes for Brad Pitt to play him in a movie.
#318 - Ray has the largest family to appear in the series which has different nationalities ranging from Swiss to Scottish to Russian
#319 - Ray was born in the Bronx
#320 - Ray later moved to Morrisville
#321 - Ray's childhood crush was a brunette named Elaine.
#322 – Ray was the closest member of the team to being a pilot, having won a free flying lesson in 1976
#323 - Ray's surname was misspelled in the series as Stanz,
#324 – Winston’s surname was misspelled in this series as Zeddmore.
#325 – After leaving the Ghostbusters Ray got a job at a major university.
#326 - After a “minor mishap”, which was followed by a large explosion, he acquired a job at Perpetual Motors, a used car company.
#327 - Winston is the reincarnation of Shima Buku, a shaman who was at war with an immortal demon known only as the Undying One.
#328 - Winston mentions having a girlfriend, but she is never seen on screen.
#329 - Winston used to be a construction worker prior to joining the Ghostbusters
#330 – The construction site Winston worked on belonging to his father.
#331 - Winston loves baseball, and his favorite team is the Jaguars.
#332 - Winston takes part in a paranormal baseball game for the fate of Peter Venkman's soul.
#333 – Winston loves mystery novels and detective stories.
#334 – Winston also likes classical literature, including the works of Herman Melville and Charles Dickens.
#335 – Winston is also a fan of The Alan Parsons Project.
#336 - Winston is almost always shown driving the Ecto-1
#337 – Winston is often seen doing maintenance on the vehicle such as oil changes.
#338 – It is implying Zeddemore is fond of the Ecto-1.
#339 – After leaving the Ghostbusters Winston got his pilot's license
#340 - Janine is the youngest daughter of a working class family.
#341 – Janine’s parents, sister, nephew and grandmother all live in Canarsie
#342 – Janine lives in Brooklyn Heights, where she grew up.
#343 – Janine tends to wear loud, blocky jewelry and tends to wear a mini-skirt at work.
#344 - In 1987, Janine owns a convertible red Volkswagen Beetle
#345 – That red Volkswagen Beetle was severely damaged after being loaned to the Ghostbusters
#346 – Janine replaced the Volkswagen Beetle with a yellow Renault 5 Le Car,
#347 – It is unknown if this is a loaner/rental or Janine’s own car
#348 - Later instances show that Janine owns a pink Beetle convertible.
#349 - Janine has a sharp, sarcastic sense of humor and has been known to make jokes about the Ghostbusters, either to their faces or under her breath
#350 – Janine went through a lot of severe changes to the character
#351 - It is revealed that Janine’s changes were the result of her wishes to a "makeoverus lotsabucks”, a demon posing as a sort of fairy godmother
#352 – Slimer was the only one who noticed these changes to Janine
#353 - Overtime, Janine has apparently reverted back to the way she was