(Before I go to bed, I felt I should seriously mention this outright, since Cif's gotten a bit weird: Cassy is definitely a girl. Unquestionably. Both physically and mentally a girl.)
(I should also probably mention that, despite this, Cassy and Cifero look a little alike. However, Cif is older than Cassy, and a bit taller as well. Also, his wardrobe tends to vary more while Cassy normally just wears cut-off/normal t-shirts and shorts/pants.)
(... There's a reason for this sudden explanation. The reason will make itself evident eventually.)