Pokemon HeartGold & SoulSilver- Lyra; Unknown Creator :( Yeah I can't provide a link for this either. :P

Pokémon Unown: Stats, Evolutions, Locations, and How to Capture - Cheat Code Central

4] I caught all unique shiny Unown in Gen 4! : r/ShinyPokemon

Pokémon HeartGold and SoulSilver - Wikipedia

I wonder if Legends will explain the connections between Unown and Arceus. Or just explain Unown in general a bit more, cause those things seem to be able to friggin alter reality.

2x (HGSS-054) Unown (U) Pokemon HeartGold SoulSilver Card # 54

Unown - 55/123 - Uncommon

Pokemon 4228 Unown Question Pokedex: Evolution, Moves, Location, Stats

I beat Pokemon Heartgold with just an Unown by PeridottoPuffu -- Fur Affinity [dot] net

Pokemon 2201 Shiny Unown Pokedex: Evolution, Moves, Location, Stats

Pokémon Legends: Arceus Unown locations guide