[quote=@BCTheEntity]
[@Halvtand]
1. There's no way Piccolo got to 800000 from 3500 in less than two months, when Goku only increased from 8000 to 90000, with a zenkai boost and after training at [i]one hundred times[/i] Earth's normal gravity practically non-stop for six days. That being said, yes, it's totally feasible that Limic's corruption might have affected the fusion in some way, though I feel like it might not need to be the case that Harkon doesn't then improve his power at all after fusing with him. That just seems incongruous to how DBZ itself works; even the weaker characters improve fairly consistently as long as they keep training to improve their power level, after all.
2. Well, of course. All I'm saying is that it's a pretty major thing to need to account for, if a character has a cuts-nearly-everything attack that they can basically spam freely.
3. Oh right, he could do that. Even so, I'd still go with the thing that has a precedent in canon over the thing that doesn't, as a general rule.
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1. I agree, this leap in power is HUGE, even if we removed 10% of it and brought it back to 80,000 it's still way out of what we'd expect to see. I only brought it up because it came from the one source I could find that in any way could be considered somewhat legit. Personally I think we should see about the same power increase in Piccolo as we saw in Goku when he trained with King Kai, which in a few months should leave Piccolo at about 5000-6000 or so. 
2. Yes, I understand your concern, it is something that we have to look out for, because unbalanced techniques like these can seriously wreck the game. I've played and GM'ed several fandom-rps myself, the danger is real. On top of that I've heard the "I won't abuse"-line about five million times, so yeah. The only thing that can help balance this is playing in the advanced area, because the requirements are so much higher here. You don't just run in and attack, you have to justify it first, role play the whole thing. 
3. As a general rule, yes. I'll leave it to the GM to decide right now though.

Thanks for the great discussion. I'll try to give your characters a god read-through tonight and tomorrow. I already have one question, but want to read everything through properly before I make a fool of myself :)