Saint Seiya : Sea Dragon Kanon, Twin gods Hypnos and Thanatos, Garduda Aiacos, Cancer Deathmask
Toriko: Starjun
Fairy Tail: Cobra,
Hunter x Hunter: Phinks, Feitan, Menthuthuyoupi, Illumi Zoldyck
Naruto: Kisame Hoshigaki, Jiraiya, Fourth Raikage, Kakuzu
Bleach: Shukuro Tsukishima, Kugo Ginjo,
Akame Ga Kill: Izou (( as i always say its weird but well is special))
Tokyo Ghoul: Eto and Naki
Well there are much more characters but those are the first i have in mind i need to read more manga to get more characters but if i have to decide my top 4 it would be
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but my list always changes so it will be different after ir ead more mangas