I love writing villains, haha. It's a lot of fun for me to figure out their twisted psyche and why they do what they do. Like Karasu from my comic, Aiiro No Kunoichi, who's so thoroughly nihilistic that he just wants to nonchalantly watch the world burn.
Cap'n Merritt from the same comic is a lot of fun too, because of his boisterous and sometimes goofy personality. He's a friendly kind of guy who you would never really guess is secretly a deadly criminal. My friends/fans ended up really liking him too, so that's a nice bonus, lol.