What was it?

I didn't have one but I had a shiny holographic charzard Pokemon card back then

Mine was a teddiursa in pokemon violet

Green Zubat in Pokemon FireRed

mine was an arceus in omega ruby

Mine was a shiny sneasel in my first playthrough of Pokemon Sun. Since I was a kid I used my master ball and called it "OMG!!!!!" lol

I got a shiny lanturn from a raid

Mine was a shiny pikachu with a Halloween top hat and bow tie in Pokémon go

Same but in Pokemon go

(not sure if this counts) a yellow shinx from a wonder trade in brilliant diamond

caterpie too

Mine was.....f**k.......I can't remember its name again but I know Shupet evolves into it....I'm awful with names so yea....

Banette?

yea-

mine was a sandile in pokemon x I think, it was on the route where you ride the ryhorn

Mine was a shiny zangoose in pmg