Theory: Mendicant Bias brought them to the Ark

This post will contain spoilers for the opening to Halo Wars 2. At the beginning of Halo Wars 2, Cutter and Anders discuss how they got to the Ark without a slipspace drive. Anders said someone from the Ark must’ve opened a portal and brought them through. I believe Mendicant Bias is the one who has brought them to the Ark, as so he can atone for his sins. I think this can go inline with my other theory, in which Atriox is looking for Bias. Bias doesn’t want to be found by someone as violent as Atriox, and is hoping Humanity can get to him 1st.