Nightshade (Shade, for short) was the original Sen. But after 2 years, her strong personality became too different from who I really was inside, so she took a back seat to the current Sen, and her name was changed to fit her a little better.

Sen didn't change too much from Nightshade's design. The dragon bits (wings, tail spikes etc.) were chopped off, the scars were healed, some piercings removed, and her attitude made more cheerful.

Nightshade still pops out once in a while when I'm in a bad mood, though. So watch out, 'cause she's vicious. ;)