6th Gen Which is your strongest Pokémon?

[Ashes to Ashes]

Have little hands on experience with ORAS yet, but my strongest will deliberately be Lopunny. She leads any team I put her on and her Mega is my favorite thing in Pokemon.

 

[Meng Jiaxin]

In my current AS run, strongest is definitely my 3IV Gyarados followed by my 3IV Delphox. Both are bred from the Gyarados and Delphox I used in a duolocke run in XY, specially maxed out in Attack/Speed (Gyarados) and Special Attack/Speed (Delphox) with 5 hearts each in Poke-Amie. Basically I just transferred them from PokeBank at the first possible moment and relied on Sceptile (my starter) whenever they got over-leveled (due to trade level bonus).

I remember when I came across Kyogre for the 1st time, my Delphox accidentally 1HKOed it (thankfully I saved beforehand). And my Gyarados single-handedly swiped all the gyms.