Mallow (the cat):
I plan on doing more in the future, too. These are fun to do, albeit a bit time consuming given how many frames there are. If you want to play as the characters, you can now play as them using the website here: Link To The Past Randomizer
Once you generate a game, you can pick the characters on the following ROM adjustment screen. Scroll down and you'll find Mallow, Carl, and Geno down in the list. Shy Gal hasn't been moderated in the official sprites list quite yet, however in future updates she will be.
Edit: Now Shy Gal has been added!