Possible Clues:

• Dark, like ocean depths
• Squid-like, powerless finger
• Black key -- where E is found?
• Name for a pet octopus
• Dark and twisted, first king abdicates
• Jet from Bluegrass State arrived first
• Pac-Man ghost that's light blue, not black as its name suggests
• Like presses
• A Pac-Man character
• Ghost in the Pac-Man game