Likely a modern surname-style form related to Matthias or Maddox, with gift-of-God associations.
Mattix carries the ancient Hebrew name Mattityahu at its genetic core — the same root that gave the world Matthew, Matthias, and Mateo across dozens of languages and centuries. Mattityahu means "gift of God" or "gift of YHWH," formed from "mattan" (gift) and "Yahu" (a shortened form of the divine name Yahweh). It was a profoundly popular name in the Second Temple period of Jewish history; the Maccabean revolt that gave us the festival of Hanukkah was led by Mattityahu of Modi'in, and one of Jesus's twelve apostles bore the name, ensuring its immortality across the Christian world.
Matthew the Apostle became the patron saint of accountants and tax collectors, his gospel the first in the New Testament canon. Over two millennia, Mattityahu evolved into Matthew in English, Matthias in Greek and German, Matías in Spanish, Matteo in Italian — each a distinct cultural adaptation of the same generous root meaning. Mattix represents a late modern branch of this enormous family tree, taking the "Matt" foundation and replacing the conventional suffix with the harder, more percussive "-ix" ending.
This suffix — familiar from names like Phoenix, Hendrix, and Lennox — transforms the traditional into something angular and contemporary, with an edge that the classic Matthew never quite had. Mattix emerged in the early twenty-first century as surname-style naming and X-final names both surged in popularity simultaneously. It has the feeling of a name that could belong to a tech founder, a skateboarder, or a character in a graphic novel — it wears the ancient meaning of "God's gift" with a thoroughly modern swagger, bridging millennia in a single syllable.