NendoroidParts is run by vhs. As of writing, I am 17 and use he/him pronouns.
You can find me here.
The original website, nendopartsdb.xyz, was created by MyFigureCollection user Moribundead. Though it was terminated and now lies defunct, Moribundead kindly put up all the files in a zip download pubicly for someone to continue the project. You can read about it here.