Warning! Contains spoilers for the story that will feature the plot of this verse!
Additional warning: It doesn't spoil.... much of anything XD It only gives a hint to who is the "old friend" of Satoshi~
Age: Undecided. At least 15.
Personality: Cheerful, energetic. A bit too confident sometimes. Is on the edge of insecurity. Hides the blossoming fear of rejection. Secretive.
Travelled through: Undecided. At least through Kanto, Sevii Islands and Johto.
Has travelled with: Kasumi, Takeshi. Others (if others) undecided.
Has met (without travelling with): Undecided.
Canon-wise: Seeing as most things are undecided, I can't really tell if it follows Canon or not. However something about Satoshi is canon-divergent/AU.
Currently: Staying at Masara Town.
Relationship: Single. Undecided if Satoshi falls in love with Shigeru in this verse/story.
Pokemon Team: Pikachu (Thunderbolt, Thunder, Quick Attack, Iron Tail), Charizard (Flamethrower, Seismic Toss, Mega Punch, Dragon Breath), Venusaur (Vine Whip, Razor Leaf, Solar Beam, Leech Seed), Blastoise (Hydropump, Rapid Spin, Skull Bash, Bite).
Additional note: All of his other Pokemons are at Prof Ookido's lab. Satoshi goes to see them, and can add two to his team if he plans to battle.
Basic Background: During his journey, Satoshi feels something changing in him. Confused, he goes back to Masara Town and hopes his mother can help. Undecided if his mother knows but doesn't tell him or if she doesn't know. It is then that Satoshi meets again a Pokemon he met when he was a child. And this Pokemon is well placed to know what is happening to Satoshi...
Additional Note: Obviously, this whole verse/story is more about what is happening and what is the matter with Satoshi. It isn't really important where he travelled to and with who. If your character is canon, we can discuss weither or not Satoshi met them~