Dreamcast much like the videogame who served as inspiration is a very enthusiastic and hyperactive girl who always "dreams" and talks a lot. She's a bit ditzy and airhead sometimes which brings problems to her two best friends, as well being very sensible prone to cry over any misfortune or for joy. She's a huge fan of Ulala from Space Channel 5. Her speciality is the internet and the modern games. Behind that funny and childish side of her, she also can reveal a more brave and serious side she has when in a hard situation. She adores her friends Mega Drive and Saturn, being the latter most of times the one who suffers the most because Dreamcast's antics.
As "Denshin" her personality changes to a more serious and dutyful nature.