Which Pokemon have the highest base stats as of Gen 7?

Question

Including legendaries and mythical Pokemon, which Pokemon have the highest base speed, HP, Sp. Attack, Sp. Defense, Attack, Defense and overall stat?

Comments

If You Would Like To Know The Non-Legendary/Mythical Version I Can Tell You!
HP: Blissey
Attack: Mega Heracross
Defense: Mega Aggron/Mega Steelix/ Shuckle
Special Attack: Mega Alakazam
Special Defense: Shuckle
Speed: Ninjask
Total: Mega Salamence

Answer 1

HP: Blissey
Physical attack: mega Mewtwo X
Physical defense: tie between mega Steelix, Shuckle, and mega Aggron
Special attack: mega Mewtwo Y
Special defense: Shuckle
Speed: speed Deoxys
Total: tie between mega Mewtwo and mega Rayquaza
source

Comments

Which mega Mewtwo for the total?

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It's both Megas of Mewtwo, dude.