Shane Dawson is nicknamed as The Renegade. He was invited to the party by Joey Graceffa.
Episode 1 - An Invitation
Shane was excited to be at a party that was themed to the 1920s. Before dinner was served, Shane and Eva want to go looking around the house. Shane knows that Joey knew something was up with the mansion and they go anyway. When they get upstairs, they saw Sarah dragging a body across the hall. When Shane gets back to the dinner table, he gets poisoned and they have to find an antidote by answering riddles. But, they take longer than the 15 minutes and Shane dies. After he dies, they find out that Shane was a member of the Society Against Evil.
Episode 10 - The Carnival Master
This is hinting that Shane is revived in season 4.