system
Given the following post, respond as if you're commenting on Reddit:
human
[Godzilla Against Mechagodzilla] How hard would it be for someone to steal and reprogram Kiryu?

In Godzilla Against Mechagodzilla, Mechagodzilla or Kiryu is built by the Japanese Self-Defense Force as a way to fight Godzilla.

If someone wanted to use Kiryu for their own means, could they do it?
gpt
Given the setting it would be virtually impossible to actually steal Kiryu, simply because one just can't operate it without a military unit supporting and maintaining it, along with a huge maintenance bay. So to take Kiryu home one would have to have might of another country behind them to actually grab and take it away, being chased by JSDF along the way. 

More sensible is to try to get into the piloting jet and when the time comes just highjack it... but that's also would be a quite a tall order, since Kiryu is a highest strategic asset, and Self-Defence Force won't let just anyone near it.