Swapping Unreal Engine 4 Mannequin character model with something else

[Gamerz31w]

Is this a right method how to swap mannequin character model with something else? What if my character is hanging a weapon,wears bandana,bag can you tell me how to properly rig such character with just rabbit mannequin kind of like animatronic?
https://youtu.be/ABWj13SSTLE Including fluffy muzzled cartoony 3d model how it should be rigged in order to swap it with Unreal mannequin for example?

[sdsadaewqewaewqe]

HI, my dream is make a map with a skaarj taken from U2 I think who is able to do that should make public this work, you could do this I think a lot of new levels will be done, are you able to make a working SKAARJ FROM u1 or better U2?

[Gamerz31w]

Unreal 1 and Unreal 2 models had morph targeting(which was like making 2d animation for 3d low poly models) speaking of 3d model animations,right? As for Unreal Tournament 3 and Unreal Tournament 4 had skeletal meshes speaking IK bones animations,right?