Serick is a former mechanic who decided that the life of an adventurer suited her much better. Her weapon of choice is a crossbow that was originally gifted to her by a human friend, though she arguably spends more time finding ways to modify the crossbow than actually using it as a weapon.
Serick's horns can be any style. She had her horns sawn off, cauterised and fitted with screw threads, so she can remove them and screw an alternative set in their place (or just leave them off, to reduce weight when flying). She had several casts made of her natural horns too, and painted them differently so she could quickly change colours. If you become close friends with Serick, she'll give you a set of cast horns to paint for her.