I picked up this tall boi just before the Adrift Redux expedition, and I was going to remember where I picked him up but… I didn't. Flipped back through my discoveries, no sign. It's the tallest of these big synthetic creatures I've discovered. I'm certain it's the tallest creature I've discovered, but it's not in my wonders either (which make me curious to backtrack to find the tallest that is in my wonders).
I wish you could export your discoveries to a CSV file, or something that let you search through and sort more effectively, but is there any easy way to figure out where a pets origin world was?
Let us know if you figure it out. That's a pretty cool companion!