@captainjackharknes's name is based on Captain Jack Harkness, a character from Doctor Who, and his own series called Torchwood. I'll keep it short and say he's essentially an action guy who fights aliens (when he's not trying to bang them). So a spy type with fancy gear felt like a suitable representation.
Thus, the card art used is from SPYRAL GEAR - Fully Armed — https://yugipedia.com/wiki/SPYRAL_GEAR_-_Fully_Armed —. And the monster featured in the art is SPYRAL Super Agent — https://yugipedia.com/wiki/SPYRAL_Super_Agent —.
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And of course, there's also the Harkness Test on what you should consider before, um, engaging an alien: https://knowyourmeme.com/memes/harkness-test
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(I wonder if he can still also be summoned by mentioning Froppy.)
Thus, the card art used is from SPYRAL GEAR - Fully Armed — https://yugipedia.com/wiki/SPYRAL_GEAR_-_Fully_Armed —. And the monster featured in the art is SPYRAL Super Agent — https://yugipedia.com/wiki/SPYRAL_Super_Agent —.
*
And of course, there's also the Harkness Test on what you should consider before, um, engaging an alien: https://knowyourmeme.com/memes/harkness-test
*
(I wonder if he can still also be summoned by mentioning Froppy.)