Ariel & Mariel
来自 Summon Night Wiki
Ariel (ハリオ, Hario), a bespectacled impolite Silver Guild Craftknight and Mariel's twin older sister. (The one in blue) She uses drills.
Mariel (ヘリオ, Herio), a bespectacled polite Silver Guild Craftknight and Ariel's twin younger sister. (The one in green) She supports Ariel as a Guardian Beast.
Cleru/Pratty battles against them on the 4th match.