Lowe, who plays war veteran Terry on the HBO series, spoke to E! News about the future of Arlene's (Carrie Preston) baby.
"There's a new presence in Terry and Arlene's life," said Lowe.
Lowe was then asked if the presence was a baby or a monster, to which his co-star Joe Manganiello (the werewolf Alcide) responded: "Both! Have you seen The Fly? It's like that."
True Blood returns June 12 on HBO.