Did internal consistency leave a flaming bag of shit on your porch or something? Imperialdramon was the goddamn Big Bad of Convergence, don't you think it's just a -little- bit jarring to just up and throw in a completely different Imperialdramon as a hero without even offering an explanation from the outset? Because really, man. If you have an explanation for this, I'm still waiting to hear it. 

And considering Psych didn't seem to care about you up and using Imperialdramon without even asking first, I doubt he'd be that bothered about you using BanchoStingmon. Though I don't think he'd work with what you've probably got planned, so meh.