# Select a random player and tag them
execute as @a[limit=1,sort=random] run tag @s add herobrine_target

# Summon Herobrine mannequin 40 blocks away, level with the player, with gravity enabled (NoGravity:0b)
execute as @a[tag=herobrine_target] at @s rotated as @s rotated ~ 0 run summon minecraft:mannequin ^ ^2 ^40 {Tags:["herobrine_mannequin"],NoGravity:0b,profile:{properties:[{name:"textures",value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOThiN2NhM2M3ZDMxNGE2MWFiZWQ4ZmMxOGQ3OTdmYzMwYjZlZmM4NDQ1NDI1YzRlMjUwOTk3ZTUyZTZjYiJ9fX0="}]}}

execute as @e[type=minecraft:mannequin,tag=herobrine_mannequin] run tp @s ~ ~ ~ facing entity @a[tag=herobrine_target,limit=1] feet

# Mark as active
scoreboard players set #active herobrine_active 1
scoreboard players set #timer herobrine_timer 0

# Remove target tag
tag @a[tag=herobrine_target] remove herobrine_target