Product feature : assign multiple values

Is it possible to have a product features with multiple values for it ? It's possible to have all the values in the variants, but it seems only possible to select one to show on the product page.

For example, for dvd, how to make a product features for actors ?

What I need is to make appear all the actors on the product page and not only one, but I don't want to make them appear as check boxes…

Thanks for help.