Which Pokemon became superstars/hobos in the ADV > D/P transition?

[Sniper]

They really went out of their way to improve Breloom and Tyranitar further.

Snorlax got pwned.

 

[Sir_Lu]

A little nitpick, but what most people forget is that you can get it from Pokemon Channel, any nature too.

But Surf is an HM move, so it couldn't be transfered =P.
And I agree to the claydol statement. Milotic too, has taken a hit.

 

[Zenigame]

Tentacruel and Machamp are big now. Medicham, Snorlax, Suicune, Milotic, and Flareon got overshadowed.

 

[umbarsc]

Relicanth IMO got the biggest improvment, that thing was NU in ADV, and now it's a top-tier UU that can compete very well in OU with no recoil Head Smash, a plethora of physical moves to choose from, and Rock Polish to boost that shit speed. 100/130 defense on the physical side is quite nice too.

I actually think it works better in OU than UU. Head Smash 2HKOs Skarmory, and most everything else it hits neutral for in OU, and a couple the most common physical sponges in Hippowdon Gliscor hate STAB water attacks. However, in UU it is completely countered by Quagsire and defensive Poliwrath, who I've seen quite a bit of.