ElfinHilon10

Gyarados can't even learn Thunder Fang in the first place.

I dunno about that.

I'd drop Mamoswine or Gliscor.

No. Ice Fang >>>>>>>> other elemental fangs. STAB neutral EQ still out damages a 2x super effective Thunder Fang: Earthquake: 100 x 1.5 = 150. Supereffective Thunder Fang: 65 x 2 = 130.

Ice Fang is there to let Gliscor deal with Dragon/Flying Pokemon, as well as Grass Pokemon.

That's up to you. Yes, Spikes and Stealth Rock can stack, though only 1 layer of Stealth Rock can be up at a time, while Spikes has a maximum of 3 layers.

Ferrothorn is the go-to bulky Water counter here:
-Spikes/Stealth Rock
-Leech Seed/Thunder Wave
-Power Whip/Gyro Ball
-Stealth Rock/Gyro Ball/Protect
Nature: Relaxed
EVs: 252 HP/76 Def/180 SDef or 252 HP/200 Def/56 SDef
Item: Leftovers/Shed Shell
Ability: Iron Barbs

Only use non-Mega Scizor sets, since your Mega slot is taken up by Kangaskhan.

Ice/Ground have good coverage and Bronzong still walls Mamoswine regardless of whether you use Icicle Crash or Stone Edge.

Note you can Mega Evolve once per battle. Having multiple Mega Stones on your team is pointless for that reason.

Kangaskhan:
-Return/Double-Edge
-Power-up Punch
-Sucker Punch
-Earthquake
Nature: Adamant
EVs: 252 Atk/4 Def/252 Spe
Item: Kangaskhanite
Ability: Scrappy

Scizor can go without its Mega Stone since both its regular form and Mega form can have Technician:
-U-turn
-Bullet Punch
-Brick Break
-Pursuit/Quick Attack
Nature: Adamant
EVs: 248 HP/252 Atk/8 SDef
Item: Choice Band
Ability: Technician

or
-Swords Dance
-Bullet Punch
-X-Scissor
-Brick Break
Nature: Adamant
EVs: 252 Atk/4 SDef/252 Spe
Item: Life Orb
Ability: Technician

or
-U-turn
-Bullet Punch/Iron Head
-Brick Break
-Pursuit
Nature: Jolly
EVs: 252 Atk/4 SDef/252 Spe
Item: Choice Scarf
Ability: Technician

or
-U-turn
-Bullet Punch
-Pursuit
-Roost/Brick Break
Nature: Adamant
EVs: 248 Atk/112 Atk/148 SDef
Item: Life Orb/Assault Vest
Ability: Technician

Having Absol on a team with a bunch of Fighting weaknesses isn't good. Gyarados is a better fit in this case:
-Dragon Dance
-Waterfall
-Stone Edge/Earthquake
-Substitute/Taunt
Nature: Jolly
EVs: 88 HP/248 Atk/4 Def/168 Spe
Item: Leftovers

or
-Dragon Dance
-Waterfall
-Earthquake
-Stone Edge
Nature: Jolly/Adamant
EVs: 252 Atk/4 Def/252 Spe
Item: Life Orb/Lum Berry

Gliscor's best ability to use at the moment is Poison Heal. Flying Gem isn't available for SD + Acrobatics, sadly:
-Earthquake
-Toxic
-Protect
-Substitute/Taunt
Nature: Impish
EVs: 244 HP/252 Def/12 Spe
Item: Toxic Orb
Ability: Poison Heal

or
-Earthquake
-Taunt
-U-turn
-Protect/Toxic/Ice Fang
Nature: Impish
EVs: 244 HP/40 Def/224 Spe
Item: Toxic Orb
Ability: Poison Heal

or
-Substitute
-Baton Pass
-Earthquake
-Taunt/Swords Dance/Agility/Rock Polish
Nature: Impish
EVs: 244 HP/40 Def/224 Spe
Item: Toxic Orb
Ability: Poison Heal

Mamoswine doesn't have a Mega Evolution. Thick Fat is still the preferred ability, though Oblivious is useful if you want to guarantee Stealth Rock (it's an Egg move in case you didn't notice):
-Earthquake
-Icicle Crash
-Ice Shard
-Return/Stone Edge/Stealth Rock
Nature: Adamant/Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Choice Band/Life Orb
Ability: Thick Fat

or
-Stealth Rock
-Ice Shard
-Earthquake
-Icicle Crash/Stone Edge
Nature: Adamant/Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Focus Sash
Ability: Oblivious

Edited my post as you replied to the thread.

Haha, yeah, I'd forgotten about it as I had other offers on the go. ;) Glad you found it, but feel free to ask me directly if you need something else. Most of the things breedable could be turning into freebies soon as I'm almost done (there are only a few Pokémon I still need, and I can evolve and breed from there).

Ah, so it's a Nature thing.

I can try breeding a batch of 'em. Who knows, maybe I'll find a nature you're seeking. :)

Where are you in White 2? You can catch a Mienfoo at Dragonspiral Tower (though only in the Winter, so next month), or at Route 14 (as soon as you can access Undella Town, you can access Route 14). It's also on Routes 22 and 23 if you have a hard time finding it in the earlier locations.