Martial art(s) Kenjutsu
Weapon(s) Double-bladed sword
Other Information
Gender Female
Family Houjo Kaneoto (father)
Cordelia (half-sister)
Shizuku (half-sister)
Lelulia (half-sister)
Veronica (niece)
First Appearance
Aiki Chapter 57

Marleen is the middle daughter of Houjo Kaneoto, being older than Lelulia, but younger than Shizuku. In battle Marleen holds a sword that has a blade on both sides and a handle in the middle. She had a spar with Kageyasu Akemi, but ended up losing to her Thunder Ten Hand technique in Chapter 64.