Idk if I already said this but

Uhhh anyways I think my favourite game character in the LGBTQ+ community is Eve from No Straight Roads. She is confirmed by the creators in a stream to be demisexual which falls under the asexual spectrum. Other than that I don't think I have more but I do enjoy some other characters like Undyne (who is a lesbian) and possibly a bit of Monika (who is ambiguously panromantic)

If we count other media though I could add several Hazbin Hotel characters (Charlie is bi), the angry fridge Darkiplier (who is ambiguously "bisexual" although I headcanon him as a manipulative demi-aroace) and Suma from KNY who is bisexual and if we count headcanons, Anthony from Makania (headcanon as hetero transmasc) lol