Halley Jack (ハレージャック Harē Jakku) is a Kaiju that appeared in Mirrorman.
Subtitle: Comet Monster (彗星怪獣 Suisei Kaijū)
Halley Jack was attacking Androsaurus and Androsaurus Junior close to the sun. During this case a rocket that was holding Mirrorman was flying by and the Saturnian monsters and Halley Jack went toward it. Mirrorman was eventually freed, but Halley Jack did not quit his pursuit of the parent and child as they came to Earth. The Jumbo Phoenix spotted this and quickly shot down Halley Jack, blowing the monster to pieces.
- Height: 48 m
- Weight: 17,000 t
- Origin: Space
- Powers and Weapons
- Flight: Halley Jack can fly through the air and space at high speeds.
- Missiles: Halley Jack can launch missiles from his hands.
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