I spend the next several months learning all I can before I decide to embark on an adventure to capture the strongest Pokémon to aid me in glorious and bloody battle against Sonic the Hedgehog. I take my time to study Pokémon and strategy and the new world I inhabit.
The first thing I learn is that my face is nearly unable to make any expression at all. I'm not sure if this is due to some genetic defect of the body I inhabit, or a result of the process where my memories were brought into this body and this reality. In any case, my face is almost permanently stuck into one single expression for the entire time. You can be a badass and ride motorcycles and hurt and kill people and listen to Nine Inch Nails while having nine-inch nails without facial expressions, so whatever.
I also take the time to study Pokémon. If I'm going to use Pokémon to defeat Sonic, I'll need to understand Pokémon better than Sonic does. I study typing, movesets, team strategy and team synergy. Pokémon was not part of the curriculum in the Sonic Fighting Academy, so there are many new things to learn. There's a lot to learn but I'm so much better than everyone else that it's easy for me to understand it all. I was the strongest in my class, after all.
The question of what Pokémon are the strongest is an important one to answer, and it readily becomes apparent that the glorious Kanto region is the best region in the Pokémon world, and the strongest Pokémon are the original 151 Pokémon from Kanto. Plus Alolan-Exeggutor. And why use anything but the best? I'll use the original 151 Pokemon to defeat Sonic the Hedgehog again. You can't beat me, Sonic, I'm the best.