Unova added so many pokemon that I love. I honestly can't understand the hate the pokemon get. (Hoenn and Unova introduced the best pokemon imo)
Cofagrigus is not only my favourite Unova pokemon but it has become my favourite period. Reuniclus is another Unova pokemon I really love.
Cofagrigus, Reuniclus, Scolipede, Sigilyph, Golurk, Galvantula, Accelgor, Scrafty, Gothitelle, Conkeldurr, Samurott, Serperior, Swanna, Volcarona, Stoutland, Leavanny, Darmanitan......just to name the ones I like the most.
The amount of hits for me personally was absolutely ridiculous.