Incineroar - A lot of people wanted Litten's final evolution to stay on 4 feet, but I've actually loved this thing since the day it was leaked. The only bad thing about it is its low Speed.
Tangrowth - This thing is a good battler, with high attacking stats and physical defense. As the generations passed, it became even better, with it receiving Regenerator in Gen 5, and Gen 6 introducing the Assault Vest. Also, I think it's adorable.
Ferrothorn - Popular in competitive battling, but not outside of that, so I think it counts.
Magmortar - This Pokemon was the MVP of my Pokemon Yin Black playthrough. Besides, I like it more than Electivire.
Rhyperior - While Rhydon has a better design, Rhyperior makes up for it by being a good battler.
Cradily - I've used this thing in Pokemon Alpha Sapphire, and it pulled its weight.
Lanturn - This cute thing has 2 of my favourite types: Water and Electric. It's also a decent battler, with its good Special Defense.
Hitmontop - The cutest of the Hitmons.
Mr. Mime and Jynx - I actually don't think they're creepy.
Other not so popular Pokemon that I love include Venomoth, Exeggutor, Weezing, Omastar, Mantine, Miltank, Hariyama, Shedinja, Gorebyss, Gastrodon, Drifblim, Drapion, Seismitoad, Sigilyph, Vanilluxe, Eelektross, Florges, Clawitzer, Shiinotic, Turtonator, and Coalossal.