Serpentress grants Uwabami a trio of living snakes as part of her hair, which are implied to be a part of her biology.
The snakes have excellent senses, which Uwabami can utilize in order to locate hidden enemies as well as missing disaster victims. Thus, she specializes in rescue missions.
It is unknown if the snakes have any sort of offensive purpose.
- My Hero Academia Manga: Vol. 6, Omake