Originally Posted by
Yoda
But I think the biggest reason he's not is that he just learned about Lois's connection to Superman a few days prior to the attack, so Leviathan's attitude toward Superman as an organization would likely have been more antagonistic if it was Sam Lane's brain child. Prior to that meeting with Lois, which seems to have thrown him for a loop, he still had an issue with Superman. The attack in Leviathan Rising seems likely to have been an attempt to recruit him & take out Waller with what we've learned so far. Same with the hospital meeting. They were trying to bring him in, quietly given they used an agent and not the big teleporting hulk thing. He wasn't going to be left as a witness like Trevor was, that already happened and they were at a random location. His heart attack seems to have thrown a wrench in that.