how to apply dissolve material to entire metahuman ?

did an opacity-mask based dissolve effect.
how can i apply it to an entire metahuman ?
is there something like a material hierarchy maybe ?

i hope its ok to ask noob stuff here::
to better explain, was looking for a teleport effect and found a solution that is material based. is it possible to apply the opacity and emission that come with it to all the materials that are used by a metahuman ? or via some nill object ?