[liketask]

Hi everyone.
Who knows there is a subplugin that during the appearance of the boss changes the players(in RED Team) model?
I'll be grateful

[MAGNAT2645]

You can easily make such subplugin on your own. All you need is to hook teamplay_round_start or arena_round_start event. In event callback you can do what you want (in your case, AcceptEntityInput named SetCustomModel with SetVariantString to your model path (hardcode or use FF2_GetAbilityArgumentString (or FF2_GetArgS on some forks))

There is a caveat, the player can change own model using plugins (if any).
In this case, you need to somehow hook prop named m_ModelName and force player to use your model while arena round preparing.

[doroemon]

https://forums.alliedmods.net/showthread.php?t=318612
Maybe try to use ffbat_publicpack "special_lastmanbackup"?

[Hoto Cocoa]

You can do it with ModeManager
tf_models_equip <target> <name>
and with "command" in boss config of Batfoxkid's fork or you will have to make a plugin yourself.