Kal / Cas
Pretty much their modus operandi. All of us built a weapon to fight them on a big scale in space and I fought them on the ground on an ally species' homeworld. If we ever go to my galaxy or some variant of it before it goes poof, we're going to need to be better equipped. Especially the ship. This thing wouldn't last a second against batarian pirates, let alone the Reapers.
This is the part while I smile and nod. Or just nod. But hey, if you get on with him, that's good, right?