Only seen
An Unearthly Child but I don't like him!
For one thing, he's introduced in a
very creepy way: A seemingly unhinged old man who hangs out in a dark junkyard and whom Ian and Barbara believe is holding 15yr old Susan against her will.
And when they confront him, he cackles and taunts them!
"Call the police then! Go on! Hahahaha!"
The underlying insinuation is that he's either a mad man (at best) or a
pedophile (at worst).
But even when we discover he's a Timelord, his personality is no less abrasive:
- He actually
does hold Ian and Barbara against their will, saying they've
"seen too much"... a move usually reserved for the villain.
- He deliberately lets Ian get an electric shock.
- He cackles when they ask to be freed.
- He insults them, calling them ignorant primitives.
- He disses Native Americans (granted, the analogy is apt but still, not very nice).
- And he's entirely unconcerned when they're knocked unconscious.
Later, I hear he:
- Bashes a caveman's brains in with a rock.
- Tries to convince the Thals to abandon pacifism.
- Attempts to throw Ian and Barbara out of the TARDIS while it's in flight.
No wonder they called William Hartnell "Bloodthirsty Bill"!