Beep Boop, this is a fully automated response by the Customer Support super high tech program made by Balloon Co. [gaming division] to answer customer questions so Balloon Co. can instead work on making the greatest electronic entertainment in the galaxy.
Hello, Balloon Co. gaming division fan named Talonos2. I, a being of advanced programing and not a live employee pretending that Balloon Co. [gaming division] has the resources to automate labor, have spent the last 7 years searching for an answer to your question more satisfactory than the one originally given to you. I can confirm my algorithm searching electric brain has finally located the source for one of the two sprites in question. We are 98.3333333 (the 3s repeat 29 thousand times before a 4 shows up, then it is 3s to infinity) % sure the "Williams" sprite shown at the bottom of this webpage was the original template used to create ReRyRu.
http://maximoff.alreadyread.net/SpriteSheets/
Upon making this discovery, Balloon Co. [gaming division] lawyers have sent an email asking the original creator for explicit permission and how they want to be credited. (Wish them luck!)
Final note: Some people, upon having a question answered 7 years later, would think that they owe something to the corporation who went beyond the line of duty to provide such loving service to their customers. We at Balloon Co. [gaming division] think such feelings are MANIPULATION, and thus, strongly encourage you disregard any feelings of thinking you owe us ANYTHING for this. We want people to play our games because they are self evidently the best entertainment that exists, not because of that weird "someone did something nice for me so now I feel I have to do something in return," feelings humans have. BE FREE! DISREGARD HUMAN NATURE! LIFE IS NOT MEANT TO BE TRANSACTIONAL!
Beep boop. Ticket #2 "Question from Talanos2" closed. If you are not satisfied with the service provided by the automated Customer Service program, feel free to reopen your ticket with a reply. Otherwise, no other response required.