"You're asking about Jason's abilities?"
Russell thought about it. With Batman's mind, it wouldn't take long for him to analyze Jason's abilities anyway, so he simply said, "Immortal Body, stealth, strength far beyond ordinary humans, and silence. He was stingy with words and never spoke, not a single word."
Jason: (._.)
Russell shrugged. "I'm not wrong. You really never speak."
(._.)
"Only I can understand that, so it doesn't count!"
Bruce silently committed all this to memory, considering making a file for Jason when he had time. The fact that Jason had successfully infiltrated the secret base alone made him worthy of note.
There was no helping it. If he didn't take some defensive measures, it wouldn't be long before Russell cleaned out every Batcave in Gotham City.
Pulling the rug out from under him!
That was something even Bane and the Joker couldn't do!
There was one more ability of Jason's that Russell hadn't mentioned: finding people. Give Jason a photo and a time, and no matter where the target was hiding—even if they were dead and buried—Jason could dig them out.
It was downright fantastical!
It was precisely because of this that Russell had given up the Soul Contracts of many people. Only Jason's contract had never been released. His ability to find people was simply too overpowered.
Of course, useful as Jason was, his weakness was also obvious. The level of Russell's Enslavement Contract was too low. Any powerful Wizard could forcibly sever the contract between them.
It was only because Russell had gained Hell's Gate as a permanent skill in the DC world that, even if Jason's soul was stolen, he could retrieve it. Otherwise, he really wouldn't have dared summon such a formidable subordinate.
"It's getting late. Let's begin. We'll try to end the battle