[@Starfall] 
Understandable. I've been rp'ing with Corban since 2000, but forum records only exist back to 03. So a stupidly long time.

As for my history with Shin-Ra, Corban has never fought sephiroth ( as in a sephiroth rp'er) or met him, but for a while there was a fierce rivalry between Corban and one Sephire Fusion (played by some other guy way back when on the Yuku forums), who was essentially fused with Seph's essence on a lesser or greater scale for whatever reason. So Corban knows of him, SOLDIER, and essentially Mako history altogether. Several times Corban has aided the -what your characters would know as the 'old' Shinra- on various missions IC. Other times they're trying to kill each other. 

They are, politically, frienemies.