Mercury is technically an outcode, a ‘glitch’ as some may say
His universe was destroyed (no backstory for this yet) and with a small bit of help from the Stars he can now basically world hop, or ehatever the phrasing is
It would be a shame if he was targeted by the Bad Guys™️
A total shame :)
Mercury is probably a monster (see : definitely) but I need to come up with like a species for him. Could make him a fire elemental but that’s a but basic.
Outertale is like a safe haven for him (he got his necklace as a gift from a certain pun maker who resides there <3)