Hello there everyone! I decided to build a new team around Mega Charizard Y and I wanted to ask what are some great partners to pair aside from Wide Guard user (Aegislash/Conkeldurr) or an Intimidate user (Scrafty/Lando-T)?
The king of Char-Y has work in 5 minutes, so I'll get back to you.
Aegislash is not that great of a partner, from personal experience.
edit: Back <3
Char-Y needs a few important bases covered:
1) It does not matter what set you run, you ARE fucked by mega Khan. Very few run Return from my experience (I've seen literally 1 in the last month), and even with heavy bulk investment, jolly Return is a chance to KO. Double-Edge WILL kill you. Overheat KO's Khan, but only if you outrun it - which, since you share its Speed tier, is always a gamble. Ways to deal with this are Terrakion, Landorus-T, Garchomp, Mienshao, Gengar, Aegislash, and Venusaur (Fire+Grass Pledge).
2) Rock Slide is the 2nd most broken move in doubles, and Charizard-Y is absolutely fucked in every imaginable way by it. Wide Guard is the most direct answer, but you'll want to be able to *kill* common users, and you'll need something to switch in to it as well. Lando-T, Terrakion, TTar, Greninja (not even joking), Aerodactyl, Garchomp, Mienshao, Rhyperior, and Excadrill are pretty much all the common ones. Lando-T, Cresselia, Swampert, and Venusaur help.
3) Electric types. While many, many teams have an electric type, there's a very, very narrow variety of them. Thundurus-I and Zapdos dominate the selection - other electric types are Raichu, Pachirisu, and... no that's pretty much it. That said, Raichu pairs well with Char-Y - it turns Thundurus into a liability for your foe. Garchomp, Excadrill, Swampert, Golem, Rhyperior, and Gastrodon work well. Grass Knot Thundy is a dick though. Oh and Lando-T.
4) Opposing weather destroys Char-Y, mainly if you use Solarbeam. Auto-inducers are TTar, Obamasnow, and Toed, but there's a few tricky Rain Dance users like Thundy as well.
Terrakion and Lando-T handle TTar, Char-Y really gives no fuck about Abomasnow, and Toed can be a bit annoying but generally handled by Thundy, Raichu, Venusaur, Virizion, etc. Japan Sand is the main thing you're dealing with - Swampert adores TTar, special Mega Mence, and Excadrill.
5) Heatran > your life. You could lose an entire moveslot to HP Ground, or use Terrakion, Landog, Swampert, Gastrodon, Mienshao, or Skill Swap Cresselia.
Charizard *does* wall Heatran, though.
6) Mega Mence. Regardless of its set, if it has a STAB move, you're going to lose. Landog, Suicune, Heatran (HP Ice), Thundurus, Zapdos, Swampert, Rhyperior, Golem, and Regirock generally stomp it.
7) Talonflame 2HKO's you and walls (most) sets. Run Ancientpower, or use Terrakion, Cresselia, Heatran, or Rhyperior. Don't use Zapdos or Thundy - LO+Sun+STAB Flare Blitz hits really fucking hard.
8) Gyarados. Due to the possibility of Mega evolving, this is really hard to stop despite Sun weakening it. Electric types like Thundy, Zapdos, Raichu, Raikou, etc. help, and bulky Venusaur works well.Terrakion Rock Slide's non-mega Gyara, and CC's the Mega.
tl;dr Swampert is like, Char-Y's best friend ever, Terrakion is good, gyarados and Grass Knot Thundy are huge bitches. I can link my 1670+ Char-Y team if you want, it's built around it and shows a lot of what I'm talking about.