Crooks

1. Lives alone in barn

1.1. Lonely

1.2. Doesn't get to go in worker's dorms

2. Old

2.1. Disabled

2.1.1. Slow

2.1.2. Kicked by horse

3. Cranky

3.1. Only opens up when Lennie starts talking to him

3.2. yells at Curley's Wife