There are at least Four acts who have recorded under the name Mortal.
1) A US christian industrial band
2) A UK death metal band from Essex
3) A UK electronic act from Kent
4) An australian thrash metal band 1)
Mortal is a christian industrial-band founded by Jyro Xhan and Jerome Fontamillas. They also pursued a techno influenced project called Jyradelix in San Diego, California, USA. They were a very influential band in the beginning of the 1990s.

Read more about Mortal on Last.fm.