HOW TO SUMMON THE REAL AGENT!
/give @p spawn_egg 1 51 (NPC)
/give @p spawn_egg 1 56 (Agent)
/execute as @p run agent move forward ( TO SEE THIS MOBS)
*WE CAN'T KILL AGENT. SO IF YOU WANT TO SUMMON AGAIN, YOU MUST CREATE A NEW WORLD!
(PLS SUB FOR ME)