Heya ! Thanks for the review ! And glad you liked the game ! :)
For the lore, right now, we do have a draft of what we want to have, but nothing really in game. I think this will be the focus of the next update. The presence of NPCs is something we want to think a lot about, as it removes that sense of solitude you can have in Metroid like games. If we add some, we need to carefully weigh what it could bring to the game and how.
For the name of the robotic goat, technically, in the files, she's named 'Cyclops'. She's inspired by some of Ses' older drawings, but I don't think she's the same character. Of course, you can always get in touch with Ses over on our Discord to get more information ^^
Finally, for the character's name, in the files, he's named 'Mustard'. But the name isn't final, and we might change it for lore later if we need to :)