So for my own amusement, I've been thinking about putting together a kind of all-stars team. One 'mon from each generation, and I was trying to pick six dual types without any crossover. So far I've come up with
1 - Kabutops (rock/water)
2 - Skarmory (steel/flying)
3 - Mawile (steel/fairy)
4 - Gallade (psychic/fighting)
5 - Hydreigon (dark/dragon)
6 - Trevenant (ghost/grass)
It's not really a competitive team, mostly just for in-game stuff so it doesn't have to be held to the highest standard. I've never had much to do with natures/IVs/EVs etc, so this might be a good way to learn.
I've doubled up on steel which I wanted to avoid and I don't have a fire or electric type, but either way I went the last one was the hardest. I'm also not a huge Gallade fan, but I've never used him and I wanted some kind of psychic. I could replace Mawile and Gallade with Gardevoir for the psychic/fairy, but then I don't know what to replace the empty spot with. Something from gen IV. Gliscor? Still doubled on flying but at least it's ground.
Anyway, am I missing any obvious weaknesses, or anything I haven't thought of?
Also it's five thirty AM and I've been playing pokemon all night instead of sleeping, so I hope that makes sense.
EDIT: Playing with the wonderful failure type calculator, seems Kabutops/Skarmory/Gardevoir/Gliscor/Hydreigon/Trevenant has a wider range of coverage. Still light against ghost/steel, but everything else is covered alright.