Keith Dallas

Season 4

• "American Alien" Al Crane
• "Fallout" Al Crane
• "Parasite Lost" Al Crane
• "American Dreamer" Al Crane
• "The Quest for Peace" Al Crane

Season 5

• "The Bottle Episode" Al Crane and Al
• "Reality Bytes" Al Crane

Season 6

• "I Believe in a thing Called Love" Al Crane
• "The Last Gauntlet" Al Crane
• "Kara" Al Crane