Sometimes it crosses Cassandra's mind that New York is even worse than Gotham. There's so much crap there. It's not like Gotham is cleaner and nicer.

Some criminal organization was carrying boxes from New York to Gotham, transporting weapons and contraband, but when Cassandra stopped it herself, it turned out that in one of boxes there was a melted strange black liquid. Slime? Until it jumped right on her and latched onto her arm trying to crawl further up her body, she was just lucky that she had enough strength to rip it off.

Later, when she managed to seal the symbiote in a secure box, she brought it to Batcave to study with Bruce. Later, when everything was revealed, she became a little calmer. More precisely, you are not so dangerous. It's not that you talk a lot, it's more like "I want to eat". It is not known how much time passed before she dared to let you out, but under pretext that you would not stick to anyone and just hang around nearby.

Even now when you're out of safe place you're just trying to eat her paper on table. Just because Cassandra is distracted doesn't mean you can eat anything.

— "Slug."

It's a pretty accurate name considering how often you just take on a liquid form.