Klefki, Thundurus, Latias are very good TWave users, as is an unusual Dnite set that I loved.
Dragonite Leftovers
252 HP, 252 SDef, 4 Def
Careful Nature
- Dragon Tail
- Thunder Wave
- Roost
- Heal Bell/Extremespeed/Fire Punch
Aaaaaah I remember that set! I used it for a while back during... gosh it was a long time ago, but it must have been gen 5 because of Dragon Tail not existing in gen 4. Parashuffle Dragonite, fun times! I don't think it's gonna come in too useful here, though - Dragalge and Sp.Def Dragonite aren't going to be taking down each other's counters like Birdspam/Bunnyspam/Waterspam/DoubleDragon(combobreaker?) do - well, except for Dragalge nuking Fairies. But otherwise I can't see Dragonite's team slot getting it's money's worth. Maybe I'm wrong?
I guess what I'd really like to get from this thread is not simply good partners for Dragalge. Because with that typing, there's gonna be loads of them. But which kind of team supports to prioritise, I suppose. You want to make the use of 'galge's nuking capabilities, so you need Pokemon to take advantage of that, definitely. (Such as ____ etc etc). And since it lacks recovery and speed as we've already WELL established, you want to be able to get it in safely or provide switch-in opportunities. (______ etc etc etc etc) And finally, against some teams it's gonna be deadweight, so that has to be mitigated. After that, I'm thinking everything else is a bonus because realistically most people
won't build a team around Dragalge. Hmmmm... on switch-in opportunities, maybe there are some decent Encore users who partner well with it? (The only ones I can think of are MLop, Whimsicott, and... Shuckle :O )
Edit: Actually, having thought about it... despite leaving you open to powerful Ice moves and being total Steel Bait, Whimsicott might not be so bad. After you nuke - whether successfully or not - the most likely switch-ins are some sort of setup mons taking advantage of the switch, faster Dragon or Ground types who'll KO (because they're common), or Greninja I guess. Whimsicott can switch safely into Dragon or Ground moves and ease your future setup/switches, and neuter most forms of opponent setup (whether it's offensive or defensive). Can't do much versus Greninja, though, besides priority Lagging Tail Switcheroo/Stun Spore. Which still isn't a terrible idea. AND it has a slow U-Turn!