10 Most Underused Doctor Who Characters

Talk about underused - this character has literally never been used in Doctor Who.

Debuting in Series 1 of The Sarah Jane Adventures, the Trickster never made the jump to the main show, and despite returning in Series 2 and Series 3, he hasn't been exploited anywhere near as much as he should've been.

Like the Meddling Monk, the Trickster is another devious entity who enjoys disrupting time, albeit on a far more devastating level. By altering certain events, he can turn entire planets into wastelands, but the biggest notch on his résumé is that he's one of the only Whoniverse villains to successfully kill the Doctor, as seen when a member of his Trickster's Brigade (a huge, slimy, beetle-like creature) latched onto Donna Noble and screwed up her timeline.

That proved the Trickster is among the most powerful beings in the universe, and yet, his surface has barely been scratched. This is a character who's strong enough (and interesting enough) to serve as the villain of an entire series, creating timeline distortions and parallel worlds galore, forcing the Doctor to clean up the mess.

While his Sarah Jane Adventures episodes were among the show's best, there's still plenty more that could be done by carting him over to the main attraction.