What they are
Player clones are spawnable NPC's that can be delivered. They give 25$ more than a Regular NPC.
How to spawn them
The first way to spawn them is, you/other must press the number buttons in a certain order of a player's ID. A player's ID is also their license plate. (For example, 4292337) Once one has input the code into the David83335 tower code panel, they must press enter. Then, a portal will spawn above the David83335 tower and the player's ID that you put in will spawn in it. (NOTE: the player has to be in the game for a clone to spawn.) The other way, however, is much easier. You must spawn the 01101100 01100101 01101110 01100001 01010000 00100000 01100101 01100100 01101111 01000011, or the lenaP edoC for short, and put one's player ID into that instead.)