On Eternia a tornado means an ass whooping is coming. Sy-Klone is a member of the Heroic Warriors who has the special ability of generating tornadoes. This leads to his specific way of attacking- a tornado of fists. When Skeletor and his band of living Halloween decorations attack, they usually hope Sy-Klone isn't around. Because when he is, he's going to beat the living shit out of everyone in his way.
Originally Sy-Klone was a cybrog with the special power of punching the fuck out of whatever, later he was changed into a mystical guardian samurai type who punched the fuck out of whatever. The difference was the cyborg was here to knock Spikor's teeth down his throat, the other the same while spouting philosophy.
Personally I like the original better, but I've always admittedly to being extremely G1 about MOTU. MOTU is just how ridiculous and absurd and I love it for that. Here's this blue asshole who turns into a tornado of punches. What's not to love about that?