Jeffy thinks he was sexually assaulted after Marvin spanks him in Jeffy’s Bad Word. Cody gets raped in the bathroom in one of the Junior Elementary School ones.
Jeffy’s mom and sometimes even Mario are domestically violent to Jeffy and vice-versa (although when Jeffy kills the former it’s only in self-defense).
Jeffy’s Tantrum infamously has him try to commit suicide and Junior gets caught in his noose and dies. Mario kills himself at the end of Jeffy’s Homework (not sure if the remake kept this part).
There’s unrealistic sex in very few videos (think Team America World Police) but there is a graphic drawing of nudity in The Baby Project and probably a few other videos. One video has Jeffy have sex with and impregnate a Cheerios box but some versions of it censor this. Jeffy frequently masturbates while fully clothed in the earlier videos with him.
An anthropomorphic bear girl twerks and characters sexually objectify Rosalina in the dialogue. ”Hunky” men are objectified by Penelope and Cody (the latter of which is one in the newer videos). This seems to be exclusively for comedy but yes characters are sexually obiectified.
Any portrayal of trans people in the show is misrepresentative and transphobic. Transgender women are played by a men, misgendered, and called slurs. The volleyball episode is by far the worst instance.
There are jokes about Cody wearing panties and the only transgender women are played by a men, misgendered, and called slurs. Goldilocks has jokes about Cody playing the titular girl in a play and he’s called a “tr***y” by one of the characters in it.
Junior Learns Karate has him learn to grab a fly with chopsticks, it’s not a real one so it’s flight is slower and thus the insect’s appearance is harder to avoid.
There’s at least one video where Cody dies (before coming back in the next one), an example is Squid Game where he’s the first of the main cast to die.
A lot of manipulative behavior from various characters, some of which could be considered gaslighting.
Cody's Bad Word and No Invite are some infamous examples of Junior gaslighting Cody.
One video has Mario and Rosalina get vaccinated and we see the needle enter them. The doctor later reveals that he has been using a water placebo and injects himself more than once.
Jeffy says he will in Jeffy’s Tantrum, although he’s being serious in this case. Same goes for Mario in Jeffy’s Homework where he ultimately does at the end.
Super D cheats before implicitly falling in love with another man. It’s portrayed more like him coming to terms with being gay rather than bi and he never cheats past this point.
Handsome Jeffy has an offscreen car crash and probably a few other videos do. Jeffy’s 18th Birthday shows a van exploding but the only person in it was already killed.
I only remember baby Cheerios boxes (that all die) but there’s a video called Baby Jeffy so no doubt he’s one in that, too. The Baby Project was about baby dolls but it’s a similar idea and Jeffy kills his.
Every other joke is this, Jeffy, Jackie Chu, and Ya Boy Duggie/Black Yoshi are the worst misrepresentation. One episode had an offensive portrayal of a trans woman named “Laquiquilaquequelafonda” and the volleyball episode also has an incredibly transphobic portrayal. Cody embodies countless stereotypes of gay men.
Jackie Chu and Black Yoshi are racist caricatures as well as the victims of hate speech, see the other hate categories for more in-depth information on Jeffy and hate speech related to him.