This question is really about any character that your opponent has that renames characters when you field them, Rare Collector allows you to purchase any character die and field it at L1 and Shriek Sonic Beam says that she blanks a character card.
Question is what happens if I Field my opponent's Shriek.
1. Does it do nothing, even though I control it fielded ability doesn't work because it is opponent's die.
2. Does it blank a character but have no bearing on my opponent's choices.
3. Does it blank a character and take the place of my choice essentially renaming my Shriek.
4. Does it blank a character and rename my opponent's Shriek choice.
5. Something I have not thought of (Please Explain)