Reiteration, but Zelda and Lucas work very well. The thing i like, is at the beginning of the match,we go to a corner, space ourselves, and i (Zelda) get behind Lucas, who starts PK Firing away, sh or not, while I'm Din's firing to an upwards angle, like the height a little higher than that of a full hop, since din's has so much range on explosion, and if they air dodge my din's, they get hit with a PK fire when they get near the ground. It makes a huge wall of pain for the opposing team. It's fun to do, and is a good way to start a match off, making the other team get annoyed and very aggressive.
Um, they both kill at very low percents, Zelda at lower, like 90 to 100, she has three, and 115-125 plus, she has 7 or 8. Lucas has good KOing moves too, I don't know all of them, but i'd say by 120 he's got 5 or 6, so they KO well and early. And since they kill early, Zelda can heal Lucas w/ Din's Fire for like 20 or more, dependent on range.
Overall, very good teammates, speaking of which
I'm still looking for a Lucas to be my doubles partner, my friend keeps playing CoD4 instead of smash, so i need another lucas for my team. We can discuss strategies through pming me here or on gamebattles. I have the same username on both.