Mawile is certainly viable on a pure Baton Pass team, having Baton Pass in its moveset. Is Adamant or Jolly the preferred nature?
With neutral maximum speed, you barely have enough outspeed Mega-Gengar at +2. At +3 you become faster than Scarf-Landorus and Thundurus-T and at +4 you finally break the initial speed tier. The only problem we see is that with +1, you are still 1 point behind the neutral base 100. A dedicated Baton Pass team shouldn't have any trouble to collect at least +2 for speed at least.
It is not doing much better with a Jolly nature at +1. The only relevant Pokemon there is positive Kyurem-B, we think. At +2 there are mostly setup sweeper but outspeeding Scarf-Heatran sure is nice because it allows you to pass to someone else before it ruins your day. The perk of this nature is that it manages to beak the speed tier at +3, one turn earlier.
Now, we haven't tried out the new Scolipede yet, but from what we heard it appeares to be pretty competent at its job; basicly like Ninjask, but with more bite, OHKOing 252/0 Latias over 85% of the times. You tell us if it can accumulate more than 3 speed regularly or not.
So, what can it contribute to the team? Well, its hits have a lot of ohmmps behind its attacks. Aside from being a nice cleaner, Taunt is invaluable for a Baton Pass team. The other ones who get both Baton Pass and Taunt are obviously Smeargle and its gigantic 4MSS, Mew and its typing overlap with Espeon and Mr.Mime, Gliscor, Umbreon, Absol; the latter one competes with Mawile for the Mega-Slot. It has another strong ability to backup Espeon and arguably the better STAB to muscle past Steels while Mawile is not priority weak.
Mawile can setup Stockpile and Iron Defense. However, we do not think it is a good idea when lacking any form recovery compared to, say, Iron Defense Scizor. Swords Dance fares a bit better, especially when you consider the good coverage of Fairy/Dark (Absol gets the same coverage but with the other move as STAB), but unfortunately it needs +3 in order to OHKO Crunch a bulky Heatran. If you run Swords Dance on it, be sure to have at least one more Sword Dancer behind in order to SD on two seperate occasions. Good that it does not get much bulkier than that.
So, is it any good?
Mawile @ Mawilite
Ability: Intimidate / Hyper Cutter
EVs: 252 Atk / 252 Spd / 4 HP
Adamant Nature
- Baton Pass
- Taunt
- Play Rough
- Crunch / Substitute
Substitute only when there is reliable recovery with Ingrain/Aqua Ring. We are a bit indecisive about Hyper Cutter and Intimidate. Protecting one Attack from Landorus-T and friends is fine but rather situational and only works once, so we still think that Intimidate is a bit more consistent.