[quote=@Krayzikk]
....

Do you have  a n y  i d e a  how a fusion reactor works? Or what a breach would mean?

At all?

[i]Literally anything?[/i]
[/quote]

Honestly, no, but then again I play it quite fast and loose when it comes to physics in the RWBYverse.

The intention behind having a fusion core is for Gren to have an indefinite power source for his body, similar to Tony Stark's Arc Reactor. However I also drew inspiration from Fallout, as most if not all the robots in the Fallout universe use Fusion Batteries that allow them to continue to operate even 200 year later. However I also chose a purposely less advance and possibly more volatile alternative of nuclear power instead of an Arc Reactor to give the impression that Gren, compared to someone like Penny, uses older quality stuff. He could have a small and more advanced body if he was using the same stuff that Penny is made of, top-of-the-line Atlas android tech, but back in his White Fang days he had to do with stolen technology that he was more or less a propaganda stunt for (Sorta like an evil Robo Cop). The fact that it worked was a happy coincidence that allowed him to get accustomed to his new condition.

[quote=@MULTI_MEDIA_MAN]
<Snipped quote by Lucius Cypher>

"Of course Gren wouldn't intentionally try to harm her, just get into position for her to harm him. This relies more on Shiro's willingness to smear Sapphire's name, as well as let Gren be critically wounded."

That's what I meant. His plan is [i]absolutely[/i] to intentionally hurt her. 
[/quote]

Fair enough. Can't make an omelet without breaking a few eggs. I should be clear: Gren doesn't want to fight Sapphire. But that doesn't mean he won't plan on it. Watching the recent RWBY episode just gave me an idea of how he could use the opportunity, should it ever occur.