An Off Wave is a very powerful attack used by Tabuu in Super Smash Bros. Brawl. It is a bright orange shock-wave that can turn every fighter into a trophy from impact. They are generated from Tabuu's wings.
In The Subspace Emissary
When everyone first saw Tabuu up in the air controlling Master Hand, Tabuu pulled out his wings and he released an Off Wave turning everyone into a trophy (however Luigi and Ness were revived by King Dedede's brooch).
Later when everyone was brought back, Tabuu pulled his wings out this time, but before he could send another Off Wave at the fighters, Sonic the Hedgehog came in just in time crumbling Tabuu's wings.
Off Waves are also used by Tabuu in the final boss fight, but they are not powerful enough to defeat everyone, just one fighter. Template:Endspoiler