Created by Pokejedservo on Oct 22 2009
Special thanks to UltimateCharm for additional sound clips.
EDITOR'S OPINIONAlpha Trion, one of the only Cybertronians in the franchise to show signs of aging.
Anyways in the original series he was originally voiced by VA John Stephenson. Our first AT voice here was very much an elderly voice (in which even back then Stephenson is very much an elderly man) while this AT voice wasn't in the series a lot it does suit AT's wise old persona quite well.
In the original series episode "War Dawn" Corey Burton was voicing Alpha Trion, though I am not quite sure how to classify his age since Corey's Alpha voice does strongly suggest young but the only difference in Alpha's looks is that he has a shorter grey mustache. Corey Burton's acting for the performance is not bad but it sounded a little too much like his Spike voice to be honest.
In the Season 3 episode "Forever is a long time coming" we definitely see him as a younger bot whom back then went by the name A3 in which he was voiced by the late Tony Pope. And after getting to see that episode again recently I must say I was pleasantly surprised by how cool Tony made Young Alpha Trion or shall I say A3 sound by giving him a determined manly voice that was an interested fit for Alpha's younger self.
Alpha didn't really have a speaking role again until Transformers Animated Season 3 and had a relatively small role in a few episodes in which he is voiced by Phil LaMarr. Its not too hard to tell that Phil is voicing him (in fact he kinda sounds like Jazz only older and without the Ghetto accent) but while its not one of Phil's best works but its not a bad one as it does fit Alpha Trion fairly well.
Overall I liked John Stephenson the most, Phil Lamarr at second and Corey Burton at third. (Though Tony Pope did make an interesting Younger Alpha Trion as well.)
(Update: Apparently George Takei and Rick Thomas have voiced Alpha Trion as well the former was a pretty natural choice as George's voice and performance does suit how much of a sagacious old man Alpha Trion truly is. While Rick's work on the role is okay as while he does occasionally slip into his Galvatron voice Rick does a decent job as Alpha Trion and while its not one of his better performances in the show its certainly not one of his worst. So in other words I rank George up there with John and Phil while Rick is not bad but not as good as John, Phil and George.)