What are your top 5 bosses?

For me I’d have to go

5.Great Shinobi Owl

4.Demon of Hatred

3.Owl Father

2.Genichiro Ashina

1.Isshin, The Sword Saint

Honestly there is nothing even slightly mediocre about Genichiro and Isshin. they might be the most perfect bosses I have ever seen on a video game.