10 Oldest Characters In The Doctor Who Universe

4. Eldrad

Doctor Who Ashildr
BBC

Estimated Age: Over 150 million years.

As noted by the Fourth Doctor in 1976's The Hand Of Fear, members of the Kastrian race are "very difficult to kill", which means that they can live for a hell of a long time.

Eldrad is one such Kastrian, a silicon-based life-form that is encountered by the Doctor and Sarah Jane Smith in a 20th century English quarry. Eldrad has been here - or at least, part of Eldrad has been here - for 150 million years.

It's only Eldrad's hand that is discovered within the quarry, perfectly preserved inside a block of Jurassic limestone. However, because Eldrad is so powerful, he's able to possess Sarah Jane when she comes into contact with this hand, and this eventually leads to him regaining a full, humanoid form.

There's no telling how long Eldrad could end up living for, considering that, again, he's ridiculously hard to kill. Either way, surviving inside a hand for 150 million years is an impressive feat.

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Danny has been with WhatCulture for almost nine years, and is currently Doctor Who Editor and WhoCulture Channel Manager, overseeing all of WhatCulture's Whoniverse coverage. He has been writing and video editing for 10+ years, and first got a taste for content creation after making his own Doctor Who trailers and uploading them to YouTube (they're admittedly a bit rusty by today's standards). If you need someone to recite every Doctor Who episode in order or to tell you about the making of 1988's Remembrance of the Daleks, Danny is the person to ask.