My first was probably Transformers, I saw that years before I knew the distinction. I also caught the occasional episode of Sailor Moon back when USA was airing it, since it was on somewhere between Sonic and Street Fighter IIRC. I believe the Megaman series aired around this time, as well (dadada super fighting robot! dadada MEGAMAN).
I think the first I actually recognized as such was DBZ. One of the local independent channels had the Ocean dub on Saturday mornings in 96. Then Toonami rolled out in 97 with Voltron, later picking up Beast Wars and Robotech, pretty much cementing the mechahead in me.
