>>41039587First, they want them to have a penis. They retweeted the homo auditions three times (first two where for Tempus, third one is probably for the third gen of homoEN). And even though the girls audition as supposedly "permanently open" they never ever tried to remind us on Twitter that the audition page exists.
Second, homo and live alike, they look for voices first. Not necessarily beautiful singing voice, but voices that are out of the ordinary and/or that fits a particular character. That’s one of the main differences between hololive and other vtubing agencies. They don’t want generic sounding girls. It can be high-pitched, low-pitched, mickey mouse, breathy, nasally, or anything. But not generic.
Third, they want one talent of any kind. Looks like they want at least one Japanese speaking talent per gen as verified by all gens from EN, ID and even homos. Always one JP speaking chuuba per gen. Other talents can be dance, singing, drawing, etc. Could be anything but you need at least one.
Fourth, fitting a character. Live2D avatars and characters seems to be created before the talents, so you can be (un)lucky simply because your voice/personality doesn’t fit the characters they have created.
Singing seems to be irrelevant (unless it’s your talent), but you’ll NEED to train as soon as you’re recruited. Motivation is always a plus of course.