Aliasing xigma → xigmamgix
Link to alias

Reason:

There are four different xigma tags on the site between the two above, xigma_t56, and xigma6000, so aliasing at least two of them could help with searching, and I highly doubt there'll be a character/franchise named xigma for a while.

xigma is how the artist signs his work , there's this tag きしぐま who is another Xigma name