all the red hair pirates got together to poison Loki, who wanted to be imprisoned for 6 years anyway, otherwise it would be neg diff for Loki, because as you know
Hybrid Loki + Ragnir > Hybrid Loki > Loki > Ragnir > Harald ~ Xebec ~ some dude called Pirate King in his prime ~ 2 arms Shanks > 1 arm shanks
so between Hybrid Loki + Ragnir and 1 arm shanks there are 5 levels of gap