Actor pack
A .sbactorpack file is a Yaz0-encoded SARC archive that contains parameter files defining the behaviour of an Actor, as well as any physics files that actor requires. These archives can be found inside Content/Actor/Pack, TitleBG.pack/Actor/Pack and Bootup.pack/Actor/Pack.
.sbactorpack/Actor
ActorLink
Contains a bxml file, which defines the names of all the other actor parameter files used by the actor, as well as the tags that actor uses.
AIProgram
Contains a .baiprog file, which defines the AI actions and behaviour of the actor.