Legends Arceus didn't explore the idea of a Platinum Clan, so I will be doing my version/idea of it here with some characters and nobles and both their common and lewd deeds! ;)
Meliton (Aaron ancestor) lived in a tribe to the South-West of Hissui, he is a bug fanatic and a lot of times when searching for food in the forests he also studied and learned about bug pokemons that he loved. One day he found a unique trail and followed it, eventually getting lost in the deep forest, but discovering Hiveking, a king bee living alone in the area. The big Pokemon helped him there and Meliton helped him back getting fruits, cleaning himself, etc. Eventually they created a trust bond, and Hiveking took him to the Platinum Clab, where Meliton started living and helping the people and Pokemon there while taking good care of Hiveking that seemed as a important Pokemon to the tribe. Eventually he became completely part of the tribe and received the mantle of Hiveking Warden, taking care of this noble Pokemon. Meliton helped with foraging food for the tribe and collecting Hiveking Royal Jelly as a complementary food for their people.