[quote=@Majoras End]
I have some ideas for Download and Face, but what could I do with Cepheid?
[/quote]

Cepheid stars pulse regularly, increasing in light and temperature. Bursts of light and heat, flashes, glows, blinding and burning. Maybe a character could leave small pulsing lights floating around. Such stars are also extremely distant, in the reaches of space. That could carry connotations of darkness or emptiness. Since they pulse, maybe they're the sort of twinkling stars people on earth might look up to see and wish upon.