One kind of Ultra Beast, it fires a glowing, venomous liquid from its needles. This liquid is also immensely adhesive.
– Pokémon Ultra Moon Pokédex
Naganadel’s code name is UB Stinger. It’s exclusive to Ultra Sun/Ultra Moon.
It shares its typing of Poison/Dragon only with Dragalge.
It’s unique in that it’s the only Ultra Beast to have evolutionary family; it evolves from Poipole when leveled up while knowing Dragon Pulse. It is not found in the wild (you get one Poipole as a gift), so you can’t actually catch it in a Beast Ball.
Stat-wise, it has good Sp Atk and Speed, while all its other stats are 73. It actually has lower BST than the other Ultra Beasts, with 540 instead of 570.