I'm still figuring out how to use it myself, but I think their names and appearance come from whatever save file you're using.

So for appearance, ignore the one it shows on the editor.

And as for their names, you can put the following in the dialogue:
{0} - Assist
{1} - Techie
{2} - Lead
{3} - Assault
{4} - Scout
{squadname} - custom name of your Chroma Squad
{studioname} - custom name of your Studio
{mecha} - custom name of your Mecha
{mechaquote} - custom Mecha summoning shout

Someone please correct me if I'm wrong. Like I said, I'm still figuring it out.

Thank you kindly, i will try this

I have to put these in a talk event? like

{0} - SomeName
{1} - Someother name
{2} - CreativeAF

and so on?
also, i change the names and appearance in the file i using to play but no avail

since these are episodes that are thrown into the mix with the main game those role names are determined by the individual player if they renamed characters, so there's no control. the {3} and so on are just fill-ins for dialogue to replace that bracket number with the actor name determined by the player playing the episode. Just gotta account for that... at least for now...