Episode 19First appearance of Caliban. Orion protests at the use of the bionic mantis - their mission is to retrieve F-01, not assassinate her. Makara overrules him, saying that Lamia has the power to destroy her ship before they can get to Callinian. This goes against the Imperial Master's orders.
Meanwhile, Lamia is able to communicate with Halley again following her ordeal. He gives her the location of the planet Callinian. Lee identifies a ship on the scanner and the Bomber goes to red alert. It's apparent that the ship is damaged. The lads take the Dai-X to investigate.
What they don't realise is that the Mantis is on board. They find nothing and return to the Bomber - with the Mantis lurking in LegTrax! Lee gets another new contact - a large sphere on a direct collision course with the Bomber. The Bomber avoids it but it circles back on them and starts to open fire. Clearly this is no planetoid!
X-Bomber is damaged, so the lads junction Dai-X and attack. With the lads off the ship, the Mantis makes its move. Kirara protects Lamia who hits the alert button. Meanwhile Dai-X is having no luck with the planetoid. PPA calls the lads back to the ship. Dr Benn races to Lamia's room.
The X on Dai-X's head emits a yellow laser beam attack and destroys the "Death Planetoid". Dr Benn shoots the Mantis just as it's about to fire on Lamia but it isn't completely dead and wounds Dr Benn with its scythe arm before it finally goes down. X-Bomber finally reaches the planet Callinian and the lads are elated.
However, their joy is shortlived as the Mantis' poison takes effect and Dr Benn dies on the bridge.