Wait a second...

If Mantine has a Remoraid attached to it, and you catch a Mantine in a pokeball, you've got two Pokemon, a Mantine and a Remoraid, both in one Pokeball.

Same goes for catching a Slowbro - that's a Slowpoke plus a Shellder, right? So, that's multiple Pokemon in one ball.

And what about Dugtrio? Is it three Pokemon or is it one creature with three heads?

The more I think about Pokemon the more my head hurts...