I think that Jirachi should be included as a Trick Roomer. It has the potential to abuse being fast in Trick Room. A max Speed Jirachi would use Trick Room, followed by what I call a "slow U-turn." It will U-turn second, allowing you to bring in a ridiculous sweeper unscathed. Rampardos anyone? Celebi can also do this well, and deals with Fighting weaks. Cele can even outrun Max Speed 'Nape (In TR) and KO with Earth Power. Both of them have 100 in each attacking stat and varied offensive movepools. Both of them have great bulk, Cele even with its own, albeit unreliable, recovery: Synthesis. Jirachi can instead pass Wish, creating a mutally beneficial TR switch via U-turn + Wishpassing relationship. I've found that that using them as slow as possible is also viable.
Also, min Speed Heracross (and other base 85's) reach 157 Speed. This means that 4 Speed EVs used as leftovers on a base 60 Pokemon will tie with it, and Base 61 and over will outrun it. Heracross is thus slower (faster in TR) than Skarm, Gliscor, and other counters. It can abuse Guts for inane power.
The Regis at base 50 Speed are an acceptable alternative for bulk, with Regirock capable of Cursing (even better in a Tyranitar's sandstorm) at 100 base Attack, and Regice with 100 base Sp. Attack.
Togekiss is at 120 base Sp. Attack, and can Flinch foes to doom. Extremespeed (@ Hustle?) can be used for priority. It is slower even than base 60's. But it's two speed points faster than min Bliss. Extremespeed can remedy this to an extent. Can Twave on the last turn and continue annoying.
Also, min Speed Heracross (and other base 85's) reach 157 Speed. This means that 4 Speed EVs used as leftovers on a base 60 Pokemon will tie with it, and Base 61 and over will outrun it. Heracross is thus slower (faster in TR) than Skarm, Gliscor, and other counters. It can abuse Guts for inane power.
The Regis at base 50 Speed are an acceptable alternative for bulk, with Regirock capable of Cursing (even better in a Tyranitar's sandstorm) at 100 base Attack, and Regice with 100 base Sp. Attack.
Togekiss is at 120 base Sp. Attack, and can Flinch foes to doom. Extremespeed (@ Hustle?) can be used for priority. It is slower even than base 60's. But it's two speed points faster than min Bliss. Extremespeed can remedy this to an extent. Can Twave on the last turn and continue annoying.