Hello,
i can provide you with high end characters for games,you can check my portfolio and i hope it will suit your taste and the tasks that you need to be completed,
i can finish a realistic character from 1 to 2 weeks,and this depends upon the complexity of the character and if it is clothed or not plus one week for retopology and Uvs,of course this timeline will go down if your character is simpler or more stylized.
I hope that i will see your reply soon,thank you and have a good day