Bastion@yes Do you know nathan summers, Legion and others Omega level mutants? if you know them you probably know their tier.. And in marvel universe Nimrod is considered a significant threat to omega-level mutants in the Marvel Universe (Bastion possesses the combined powers and abilities of both Nimrod and the Master Mold) Bastion is the Nimrod UPGRADED.
You can just search about it..
https://screenrant.com/xmen-31-nimrod-sentinel-fight-ultimate-enemy/
Tiers
0 Human
1 Athlete / Peak Human / Superhuman / Building
2 City / Island / Mountain
3 Country / Continent / Moon
4 Planetary / Star
5 Solar Systemic / Galactic
6 Multi-Galactic / Universal
7 Multi-Universal / Multiversal
8 Complex Multiversal / Hyperversal
9 Outerversal
10 High Outerversal*
* was Omniversal