The third appearance of Mr and Mrs Space Spy and the first and only appearance of Grothan Deblis (In my opinion the best XL5 villain who should of had more appearances.)

Yeah! He's groovy! Even if he does suffer from really awful cliche lines!

He gives up very easily too like at the start when they first captured him he gave up when he couldn't fight back, the same reason happened again at the end.

He has awful dress sense too.

Also about Grazelda (Mrs Space Spy) her voice has changed from her deep voice as heard in Flying Zodiac and A Spy in Space to a more higher voice for this episode and Space Pen.

I haven't see those first two stories, so I couldn't possibly comment!

I thought that this was a pretty good episode. I noticed that it was three months between the arrest of Grothan Deblis, his conviction, and being sent to Conva. By today's standards, that's pretty fast work for the justice department.

One thing that i found confusing. After the Professor was captured and they agreed to trade him for Deblis, Deblis immediately left off acting like a prisoner and acted as though he had the upper hand. He locked Steve and Venus up, wrecked the navigation system, then sent himself over to the S.S. Thor. Why did they let him do it? Why didn't they do a straight exchange, Matic from the one ship and Deblis from the other? They could have threatened to kill Deblis if there was any funny stuff about the exchange, and then no one would have the secret plans. (Not that they would do so, but criminals tend to judge others by their own low criminal standards, and I can easily see Grizelda commiting murder to prevent information from falling into the right hands.)

Deblis is lucky. If they'd dallied just a little bit with his trial, etc, he would have found nothing but a flow of cooling lava where his secret plans used to be.