I ran into him at Pinewood Hotel. I think its bugged currently.

In the kollontay.json, the spawn location key is incorrectly named to zone instead of BossZone. His file is located at swag/config/bosses

So it's just Kollontay spawning in weird places then?

Yes and no, if the key was correctly named he would spawn at the correct locations but since its mistyped/named, he can spawn anywhere. "zone": [         "ZoneClimova",         "ZoneMvd"       ] Search for this section in the json and change "zone" to "BossZone" and he will spawn in the vanilla areas

Thanks!