This article is titled "Arkinen", and yet calls him both "Arkinan" and "Arkinian" in the text itself. Which is it?
These problems might be so great that the article's factual accuracy has been compromised. Talk about it here or check the revision history or Manual of Style for more information.
Arkinan was a ruthless dictator who destroyed planets and civilisations as a hobby. He was stopped by the Second Doctor and Jamie McCrimmon. They swapped his mind with that of a cafeteria worker named Sid.
The Doctor checked up on him every ten years, once in his third incarnation and ten years after that, in his fourth incarnation. After the Fourth Doctor's visit, Arkinian was finally rehabilitated as he refused the opportunity to cause destruction in the universe again. (AUDIO: The Old Rogue)