Strongest non-seafarer?

[Warmmedown]

Who is the strongest non-pirate? I guess Imu. Then Dragon.

So who is the strongest non-seafarer besides Imu? Basically a land-dweller, who isn't a retired pirate.

Some contenders:
An Elbaf giant
Knight guy on Dressrosa
Yamato
Gorosei
God's Knights
Someone else

 

[SSJ2]

Kong