They were ALL lame in Superfriends, because Superfriends was lame. Singling out Aquaman from that line of poorly written/voiced characters is unfair.
I never found him lame, a dude who literally rules 75% of the earth, has super strength, and is pretty invulnerable to injury is hardly lame. The fact that writers who all happen to be land bound humans can't come up with compelling stories that involve the oceans and the King of the Seas, doesn't make the character lame. It just highlights their lack of creativity.