The invaders have a couple of extra eyes perched on what look like antenna, and one of them is played by Gwendoline Christie, currently making an impression on U.S. Taking a page from the “Harry Potter” treasure trove, the show features a teenage wizard, Tom (Scott Haran), who with his non-believing buddy Benny (Percelle Ascott) must try to save the world from aliens known as the Nekross, who have come to drain Earth of its magic. Simple but fun, this half-hour adventure isn’t much more complicated than its title, but it’s the kind of thing that should amuse an eight year old, and make adults of a certain age feel eight all over again. Aliens,” an utterly nostalgic step into the cheesy kids way-back machine, produced under the loving eyes of “Dr. Enter little-seen children’s network The Hub and “Wizards vs. A bit like using every part of the chicken, cash-strapped cable networks have become much more aggressive about picking up international productions to augment their original programming lineups.