Galaxy Trio was the backup feature to Birdman during his one and only season in 1967. Regretfully, the team's classic adventures fell into the hands of the idiots at [adult swim] a few years back, and we showed you a "babyfied" clip of the Trio some time ago.
However, if you'll pardon the advertising attached to this clip, taken from a Galaxy Trio fan channel on YouTube, we have the first episode, "Revolt of the Robots". Ted Cassidy (ex-Addams Family) is the voice of Meteor Man, with Don Messick as Vapor Man and other supporting characters.
Could the Trio be brought back today? Under the right conditions, yes. Unfortunately, Cartoon Network & [adult swim] just don't see the prospects. Their loss, as usual.