If you type a certain ID of a Player/Bot in the console like this "makespec [id]" while the Player/Bot is in spectator mode and then if you type "spawnplayer [id] [x] [y]" the Player/Bot will then spawn at the given pixels with no weapons at all. Until the Player/Bot finds and equips some weapons that are dropped on tiles then the Knife(item id 50) appears.

I spawned myself once when I was in spectator mode, I was still in spectator mode and I could hear me spawn but I kinda didn't. And when I spawned I had no weapons, it feels quite bizarre.