* AuthorExistenceFailure: A few tragic examples, first with the sudden suicide of Season 2 contestant Rachel Brown, which was then followed by the death of Season 3 contestant Aaron Song from complications of diabetes, and then fellow season 2 contestant Keith "K-Grease" Greene's drowning.
* HeyItsThatGuy:
** Will in Season 9 previously appeared on ''Series/{{Chopped}}''.
*** As did Season 10's Roshni.
*** And Season 11's Jacqueline.
** Season 12's Richard previously won a 2012 episode of ''Series/{{Chef Wanted}}''
** Also in Season 9, Cliff from Season 2 of ''Series/TopChef'' makes an appearance when they visit BLT Steak.
** Speaking of ''Series/TopChef'', during the charity dinner of Episode 12 in Season 9, it's [[FunnyForeigner FABIO!!!]]
** Apparently, before getting on ''Hell's Kitchen'', Clemenza cooked for RobertDeNiro, which resulted in him having cameo appearances in films like ''Film/ABronxTale'' and ''Film/GreatExpectations'', the latter of which involved him stabbing Robert's character.
** in the dinner service of episode 7 of season 12, a family night service, Sarah from MasterChef Junior is one of the diners.
* NamesTheSame: The winners of both season 4 and season 10 were named Christina.
* PromotedFanboy: All chefs who say they admire Chef Ramsay in the ConfessionCam count, but Seth from season 5 fit this so well he seemed almost like a StalkerWithoutACrush. He had memorized many details about Ramsay's private life, including the type of cars he drove, and the names of his four children.
* WhatCouldHaveBeen: Gloria was originally supposed to stay as the red team's sous chef in Seasons 6 and 7, but either quit or was ditched at the last minute, resulting in Heather acting as a temporary replacement during Season 6, and Andi coming on-board as the permanent replacement for Season 7. It's not known exactly why this happened; some say the producers ditched Gloria because they didn't like her somewhat mopey demeanor and wanted someone [[MsFanservice younger and more attractive]], while others say Gloria quit because she wasn't comfortable with the attention she got from appearing on the show.
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