Cape Duck is an episode of Loonatics Unleashed. It first aired 18 Nov 2006.
One of Tech E. Coyote's weapons goes haywire causing Danger Duck to take out the Sagittarius Stomper, who vows revenge. The Citizens consider Duck to be a legend, causing other people to become jealous. Elsewhere Dr. Dare is released from prison and attempts to steal the Shield of Perseus, after being hit by Tech's invention.
Tech howls in this episode when he defeats Dr. Dare. This is the only episode where he howls. He also whimpers at one point when the Stomper grabs him.