Add
"If you want me to explain Nasods I can. ... That robot that attacked Metro was actually from my world, or, an alternate version of my world, I've reached into two other timelines and my mate is actually from a different timeline. The robots came from that timeline, and are still coming, strong and relentless, they target members of the family, members wearing these horns."
He tapped his own.
"They aim to kill, focusing on us, but not ignoring anyone else if no primary target is in sight, they can breach the timeline barrier and will come after any random member at any random time, this one happened to come after me, and ended up in here. Aside from murderers, they're also thieves of energy, draining any energy from any other life form they can in order to become stronger. Upon destruction, the intention is they're supposed to explode, scattering virus blood everywhere, which soaks into the skin and causes a horrible illness, 85% fatal, this... works for some, most do not have this, thankfully."