>>32107238mouse recently confirmed she has a ten-inch cock
froot has a fat cock, though the length here is technically unspecified (frootposters seem to approve of the 'small-to-average but girthy' modell)
I think kson has mentioned having a massive dick several times, though I don't recall her exact wording
silver's dick is 'too big, might hurt someone', whatever that means
melware has an average-sized dick, so we can assume melody's is similar
nyan has repeatedly complained about artists drawing her dick too small, but I don't think it's actually that big
we know zen can swap out her legs, so her having hot-swappable genitalia is plausible - meaning she could end up anywhere
I can't remember anything vei has said explicitly, but I think her having a small dick makes the most sense from a character perspective
nazuna has stated that she has a dick, but anything about its size is entirely conjectural
and hime, as always, is an enigma - some would say that big tits implies big dick, but I'm not sure the evidence supports that