The Energon Pub

mine would have to be.
G1: Starscream for sure
Beast Wars: Dinobot mainly because there wasn't really any Starscream.
Armada: Starscream
Energon: Starscream
Transformers Movie: Starscream

Hm. This'll be difficult, but I'll give it a go.

G1: Prime
G2: Laser Prime, closely followed by Windbreaker(no jokes please)
BW: Transmetal Primal
Machine Wars: ...
BM: Night Viper
Armada: UNICRON, Thrust is pretty sweet as well
Energon: Starscream(Deluxe version)
Cybertron: Beast Megatron
Alternators: Ricochet
Classics: Megatron
Movie: Bonecrusher, Dreadwing has really grown on me though.

Hmmm.... let me think...

Of the ones I own or have owned:

G1: Powermaster Optimus Prime, or the Seacon combiner (can't remember his name. Had him as a kid)
G2: (Never had any, wanted Laser Prime)
Beast Wars: Transmetal Rattrap
Beast Machines/Machine Wars: (didn't have or want these)
RID: (None of these either, but the Optimus Prime looked good)
Armada: Bendy Prime
Energon: Sharkticon
Cybertron: A hard one.... Cybertron Defense Hotshot or Scattorshot I guess.
Classics: Bumblebee or Jetfire
Alternator: Mirage
Movie: Hmmmm... either Blackout or Ironhide.
Masterpeice: MP-04 Optimus Prime.

Oooo fun I like these types of threads....

G1: Soundblaster or Ultra Magnus - the first is ominous, comes with two tapes and the second is a really nice vehicle that turns into a bulky robot - both of them pretty much represent the best G1 had to offer on those fronts. Kudos to God Ginrai as well for being a super fun playset and kickass big robot.

G2: Meanstreak - for the name: I always figured he had a meanstreak because he looked so dumb, couldn't move his arms and had wheels attached to the sides of his face.

BW: Tripredicus - I remember how freaky this guy looked to me when I had him... I still yearn for his re-issue...a true work of horror worthy of being a combiner and a great great toy.

Machine Wars: Stalker or Rotorstorm moulds I guess...

BM: Hmm... Blast Punch Primal and Rattrap... Cheetor is yucky.

Armada: Duh Unicron duh of course...second place for Tidalwave - this is a toy done in G1 flavoring style and was a real pleasant surprise after the beast era

Energon: err...hmm...well... looking back these toys were blocky and annoying... at least the Autobots... the Decepticons on the other hand got one great mould after another; so I'm hard pressed to pick here... Shockblast? Scorponok? One of those two

Cybertron: Here it's the opposite of Energon - 99% great moulds...so much greatness from basics and up... who to pick? Very tough choice... really tough... so many great toys and colors and characters... nope... can't pick one and don't want to say Primus because unlike in Armada where Unicron really DID stand out...Primus is excellent and fits into an excellent line...

Alternators: Well this actually isn't that hard - Hound. He's G1 incarnate and unlike "Silver"streak no one messed with his name.

Classics: I guess Grimlock. Not the perfect Dinobot commander but it's nice to see that the character was given some justice following the long hiatus from G1, the Ford mustang alt, the laughable attempt in Energon... you get the picture...finally a Grimlock toy for contemporary times worthy of the name. We've had plenty of the OTHER guys...but this is our first great Grims.

Movie: Tough call again. Most of these are really good. Leader Optimus Prime is an obvious candidate - but I sometimes get the feeling that they made him that way on purpose - to underscore that HEY THIS IS THE STAR! HE CAN'T POSSIBLY SUCK!... so sure...Leader Prime. Fine.

G1-soundwave cause his voice..
G2-laser prime
Beast wars-optimus primal
Beast Machines-Tankor and Jetstorm
Armada: Unicron
Energon: Starscream
Cybertron: Beast optimus
Alternators: Ricochet
Classics: optimus
Movie: brawl, blackout, starcream

G1: Blurr
Beast Wars: Cheetor
Beast Machines: Silverbolt
Robots in Disguise: Ultra Magnus
Armada: Blurr
Energon: Jetfire
Cybertron: Hot Shot
Alternators: Smokescreen
Classics: Jetfire
Movie: Jazz

G1: jazz
Beast Wars: hmm tough one, probably megatron though
RID: ultra magnus
Armada: starscream
energon: shockblast
cybertron: optimus