Gren is often seen as Iria's older brother and a full fledged hunter. In episode 5 however, it is hinted by Fujikuro that Gren might not be Iria's brother but is possibly her onii-san, (a Japanese term used for both older brothers and close older male figures). He taught Iria much of what she knows about hunting and serves as a mentor for her apprenticeship. He wears a blue cloak and hair beads which are similar to Iria as well as an unusual pendant which is later found by Kei.  (Source: Wikipedia)

Iria is the story of a girl and the Alien being she loves to hate. The series begins with her brother, Gren, taking a job. He is a bounty hunter, and one well known for his incredible skill. Iria, being a skilled apprentice bounty hunter herself, tags along. What is the job, one might ask. It is to find out what has happened to the crew and cargo of a Space Station. Needless to say, nothing is as it seems, and the war between Iria and Zeiram begins in earnest. <br>

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An Italian actor, voice actor, ADR director and dialogue writer, mostly known for his roles as [Kakashi Hakate](https://anilist.co/character/85/) and more recently as the adult [Son Goku](https://anilist.co/character/246/) in Dragon Ball Super, and [Cooler](https://anilist.co/character/6304) in the Dragon Ball series.

Glenn