Voltaire as a character has been my fursona for the longest time. Don't get me wrong, I have no intentions of changing this; quite the opposite, in fact - I intend to keep him as my 'sona for as long as I'm in the fandom.
However, that doesn't change the fact that it's fun to play around with a character's design every now and then. Whether these are "canon" forms or not, I'm not sure; I always thought of Volt as just a normal guy, so it'd be weird to have alternate forms as a consistent thing in artwork and stories. Regardless, it was fun to get these ideas out on paper.