User blog:Dnoryu/Source of Image and Clarification

Been wandering around character's galleries and i notice certain pictures look off and have no real source where it cames from or exactly who draw it and if that person is from SNK or not? Here're a few example:

http://snk.wikia.com/wiki/File:7cb1e7e7909a7221f9cf7e51017c4c6c.jpg

http://snk.wikia.com/wiki/File:KOF98-Promotional.jpg

No clue who drew that first one and the second one said it's by Shinkiro, it does look like his style but i don't think it's the same. Can someone clarify this cause i've a lot more pics i want to ask?