S05 EP20: Lois's mom was and still is abusive to her daughter, but she's particularly heinous in this episode, so I recommend to skip it if this is a triggering matter for you
S06 EP12 : Craig's own dad calls him "a useless piece of pudge " and makes fun of him
season 3 episode 17 commandant spangler is fired for being drunk at work and is shown to be too drunk to stand. he also binge drinks and blacks out in season 2 episode 13
Reese abuses experimental pharmaceutical drugs in the Season 6 episode "Stilts" in order to make money. Many characters smoke cigarettes or drink alcohol throughout the series. There are references to drugs like marijuana, meth and LSD in a couple of episodes.
Season 3 Episode 6 Dewey is in charge of his class hamster. Ultimately in an effort to “save” the hamster he puts it in a hamster ball and fills it with cereal and “sets it free.”
S2E5, "Casino", the episode where the family visits an Indian reservation. Big cat. It happens offscreen around 15 minutes in. It happens RIGHT AFTER they see the puma.
A puma blows up just offscreen- no blood, only dust/dirt in the explosion. Around 1-2 minutes later, the father comments how "it" got on his shoes.
in the montage of Hal's bad first impressions with previous bosses, the last one is him tripping when going to shake someone's hand and pulling her onto a table. She's screaming and her and onlookers are describing the injury, but it isn't shown.
i cant remember which episode because its the beginning clip but its sometime in season 3 dewey hides under the sand in the sandbox to avoid the dentist but he is fine
S06 EP14 : Ida (Lois' mom) has a leg amputated after a truck runs over it. It is not shown and there's nothing graphic, except with montage when the scene cuts to Hal serving a red mushy paste to the boys, suggesting what the accident might have looked like.
the main plot of the episode is how Reese is trying to get Cynthia to take her top off, and the episode ends with him groping her. (this is all portrayed negatively, and ends with Cynthia beating Reese up)
someone isn't actually kidnapped, but at the end of the episode Malcolm and Reese frame Francis to make it look like he kidnapped them by tying themselves up and hiding in the trunk of his car and alerting the police that the car is stolen.
season 3 episode 16 a virtual video game version of malcolm is claimed to have commited suicide by knife but nothing is shown except a very pixel-ly body and animated knife and blood
reece wants to fight a boy who is in a wheelchair so he puts his legs in ice so he has no control of them, making the fight even. he stabs his leg to prove he can't feel anything
It's an early 2000 series so there is a lot of general homophobic type jokes. Like in the first series Malcolm was good at acting so Stevie calls him 'homoeo' (Romeo) the grandmother is quite bigoted and thinks malcolm is gay
hal is recurringly subtly transphobic as dewey pretended to be having a tea party withh his stuffed animals and hal offered to buy him the toy that he wanted. there are other subtle instances of hal being transphobic. also dewey makes malcolm, reese, and craig wear dresses and exaggerated makeup to humiliate them
dewey is wrongfully put into a special needs class, which is referred to as a class for the “emotionally disturbed”. his classmates are exaggerated depictions of neurodivergent children. he stays for about 2 seasons.
There is ableist language, racist, fat-phobic, and transphobic language throughout the show. Season 1 episode 1 use I slur for indigenous people. Transphobia Season 2 episode 17Season 3 episode 21 opening is transphobic
characters are seen spitting up blood from both external and internal injuries and several characters have bloody noses. also there are pretty poor makeup effects done to make malcolm have a swollen face (it startled me tbh despite how fake it looked) and hal has a comically large spider bite on one cheek
season 2 episode 7 lois and her coworkers are held at gunpoint during a robbery at the store she works out but the gun doesnt fire and nobody is hurt also im not sure if this is considered violence but just to be safe season 3 episode 18 a girl brings a gun into their home so malcolm hides it from her and in an attempt to destroy it he sets it off and it fires, almost hitting people but missing