Bill Cadogan

Bill Cadogan was the leader of the Second Dawn.

Early Life
When he was child his father beat him everyday.

At some point in his life, he founded the Second Dawn cult, a group of people who sought out to survive the end of the world.

In 2054, sometime after Becca landed on Earth in Polis, they met and he burnt her alive on the stake.

Throughout the Series
In The Four Horsemen, he appears in a video showed to Clarke and Bellamy by Jaha
 * -|Season Four=

In The Warriors Will, he was mentioned by Madi through Becca's flashback. After the original nuclear apocalypse, he and his followers stayed in his bunker. They encountered Becca, who had arrived to Earth from her ship. She offered them the Nightblood serum, but he and his cult decided to burn her alive.
 * -|Season Five=

Personality
He was a fanatical cult leader.

Physical Appearance
He has long hair and jawline beard

Quotes

 * "From the ashes, we will rise"

Killed Victims

 * Becca (burnt alive with his cult)