Spoilers more for Pokemon Legends: Arceus than Psychonauts games. Do be warned if you are a Submas fan with no knowledge of psychonauts if you would follow on other post for these variants.

1. venusianpeach subnauts version where the twins get to be agents. They get their own missions but have the chance to be mentors post-pn2. They have fun Duo-Mindscapes! Another track leads to a station that at some point Ingo gets eeby-deebied to RoR instead of the past. Not sure if it is connected or will be connected with the version with mentor thing OP has, but hey here we get to see the whimsy and angst tone that both games have aha

2. AU where we take pokemon characters and fit them into the Psychonauts setting. That’s what #1 is but here I’m thinking of like, they are not necessarily connected with the Psychonauts Organization. More of like if they were in this world, what would their job be like?

(Of course there is like a mix of 1 & 2. mostly my interpretation of submas in this would be that they are informant/stationed at new york city equivalent at those times. Each train station is a safe place spies could get info or supplies from. Also twins being positive image for psychics working for the safety and transportation for the public that are not necessarily spies)

3. Actual AU where it is a merge of Pokemon setting with Psychonauts world. Pokemon and Psychics exists. A totally new world really... Theres the struggle of accepting pokemon, and then there is the struggle of accepting psychics. Both have the potential to be so helpful but also so harmful.

4. Crossover where Ingo gets transported from the Pokemon World to Psychonauts world. Again, I’ve thought of two version of this: 

First is that Ingo gets transported there instead of hisui, and somehow PLA events happen there kinda? PLA MC sure do be seeking something while also fixing dimension rifts along with other characters that are more willing to help in this kind of situation huh....

Second is that somehow in an attempt to go to the right time and place with the help of the PLA MC, something goes wrong (I imagine it to be some sort of distortion world interferance) and it sends both of them across another dimension without pokemon but with psychics. This is a whole set of problems as there doesn’t seem to be a way to connect with Arceus to rescue them. Another home lost, lost in another place....

5. waywardstation & co ’s Train of Thought AU [chrono]. Not an Psychonauts x Submas crossover but it is mindscape Shenanigans! Set in Pokemon Legends: Arceus setting only. Just wanted to share if you happen to be interested in both fandoms.

6. Other potentials