Animorphs is one of those series that probably would have faded into obscurity were it not for its intense commitment to leaning as hard into darkness as possible. This isn't the happy, everything's-okay-in-the-end world of many other popular YA series. There are a lot of weird things you forgot about Animorphs , and no, the fact that one of the main characters is permanently trapped as a red-tailed hawk isn't one of them. Amongst all the teen drama and thermal riding, there are some seriously dark moments in Animorphs . That wild streak, as much as nostalgia and genuine heart, is part of the reason fans are still talking about the series today.
Animorphs wasn't afraid to take itself pretty seriously for a book about teens transforming into animals to stop alien invaders. That's precisely why there are so many messed up moments from the Animorphs series: it was fully locked into its reality, meaning all the gross parts, the frightening scenarios, and the tragedy are presented with honesty. These books are as emotional as they are absolutely bonkers, all because author K. A. Applegate committed to a premise that could have easily been silly.
Turning into animals isn't always fun. The Animorphs struggle with ant and termite morph hiveminds, while a Taxxon morph makes them ravenously hungry. But in The Hidden, readers see the reverse happen: an ant walks across the Blue Box, gaining the ability to morph. The result is horrific, as the ant has also acquired Cassie and begins to morph into some awful combination of the two. It starts screaming and can't stop, overwhelmed with the sense of being an individual for the first time in its life. In the end, Cassie is forced to stomp out a creature that looks something like her.
In The Forgotten, the Animorphs travel to the jungle to retrieve a Yeerk Bug fighter and expose the creatures' existence to the world. Only this is Animorphs, so nothing goes well. Rachel, in grizzly bear form, is knocked out during a fight with Hork-Bajir, and collapses on top of an anthill. The ants swarm her, trying to eat her alive while she's unable to fight back, filling her ears and tearing flesh from her body. Jake eventually stops their assault by tearing Rachel's flesh off himself and placing it in front of another anthill, leading the two hives to fight each other for just long enough that Rachel is able to wake up and demorph.
The entire David subplot of Animorphs is seriously dark, but it culminates in The Solution in a scene that's so messed up it's impossible to forget. David joins the Animorphs as a sixth member when it's discovered he found the Blue Box and gained the power to transform. But he turns on the group when things don't go his way, attempting to eliminate most of them before ultimately being outwitted. They convince him to transform into a rat, and Rachel lures him to an abandoned rock out in the ocean. There, he's trapped in a cage for long enough that he becomes stuck in the morph. The Animorphs listen to his anguished, angry screams until the clock runs out and they can leave him there, a human trapped in a rat's body for the rest of his life.
Animorphs doesn't shy away from the gory details, especially when the team is morphing. While pretty much every morph looks disgusting during the process of transforming, the lobster is a whole new level of terror. Admittedly, lobsters aren't the cutest animals to begin with, but the details K. A. Applegate uses to describe the kids shifting in The Predator are particularly horrific:
"His arms had begun to split open and swell... His eyes were gone, replaced by little black BBs... Jake's face seemed to open up, to split open into a complex mess of valves. I think I would have thrown up, seeing that. Except that I, also, no longer had a mouth."