Siryn vs Annihilus Real Name
Alter Ego
Theresa Maeve Rourke Cassidy
Annihilus
Alias
Siryn Sonique Sy Terry Theresa Maeve Rourke Cassidy Theresa Cassidy Theresa Rourke Tracy Cassidy Banshee
The Living Death That Walks, Lord of the Negative Zone and Nihil
In Films
Shauna Kain
Not Yet Appeared
Love Interest
No Love Interest
Alignment
Supervillain
Supervillain