User blog comment:B214/Question and Answers 6/@comment-12.188.116.56-20190627205239

To any curious to the possible abilities and origin to sirzechs' pawn enku (https://highschooldxd.fandom.com/wiki/Enku), i suggest rading this.

https://shinmaimaoutranslation.wordpress.com/sample-translations/volume-10/chapter-1-what-those-eyes-gaze-upon/

If read you'll see that the reason enki is read is to match his elemental power of fire.