There's a type of ant that's a 'zombie' controller
The fungus Ophiocordyceps unilateralis infects carpenter ants, taking control of their bodies and causing them to climb to high locations, where the fungus can produce fruiting bodies and disperse its spores. This fungus essentially turns the ants into "zombies," controlling their behavior to serve the fungus's own reproductive cycle. It's estimated that up to 90% of infected ants die as a result of the fungus's actions.