You will Watch Winx Club Season 6 Episode 21 online for free episodes with HQ / high quality. Stream cartoons Winx Club S06E21 A Monster Crush. The Winx go to Zenith in the hope of finding a technological device that will allow them to track the invisible Cloudtower. While visiting her home, Tecna also brings Timmy to meet her parents. Meanwhile, Selina sends the fairies the next monster, Frankenstein’s Monster. But little did the Trix and Selina realize that he did not expect to fall in love with Tecna. This causes the monster to take Tecna to the Legendarium World. Stormy decides to go into the Legendarium, as the Bride of Frankenstein, to prevent Tecna from escaping.