Black Boss Bokoblin
"These heavyweight monsters are leaders of Bokoblins, and this variety has very high stamina thanks to their large muscles. Even skilled warriors will find them challenging due to their coordinated attacks involving minions. And those horns are just pure evil."
Boss Bokoblins are larger enemies that appear in Tears of the Kingdom.
Tears of the Kingdom
These large overworld enemies usually serve as mini-bosses that surround a Bokoblin Camp. They have significantly more power and health than their smaller Black Bokoblin counterparts. When defeated, they will drop Boss Bokoblin Fangs and a Black Boss Bokoblin Horn.
In spite of its huge shape and naming, it does not count as a boss in-game.