K. j u n (Hyung jun Kim) and 9 7 b z o (Eun hee Choi) are a husband and wife team from Korea. They work with various CG programs, they say which on their website. Some of the information is in Korean however, so if you don’t understand, that could pose a problem.
They have more than fantasy art in their repertoire so be sure to check out the rest of their work here http://www.kjun.org/
These are by K.jun
And these are by 97bzo