Yes, Max Schreck has made appearances in Batman comics.
No, Firefly is not typically a character found in the Batman comics.
Yes, Solomon Grundy has appeared in Batman comics on multiple occasions.
Yes, Indian Hill is indeed part of the Batman comics. It's a notable location that often plays a role in various storylines.
No, Carl Grisham isn't in the Batman comics. Batman's universe is quite vast, but this character isn't part of it.
Galvan isn't a common character in DC Batman comics. You might find them in some rare or specific storylines, but they're not a staple.
Yes, Max Lord was in the comics. He's been a notable character in certain storylines.
Yes, Thanos was indeed in the comics. He's a well-known and significant villain.
Yes, Cisco is sometimes featured in the comics. It depends on the specific comic series and storyline.
Not really. The TVA wasn't a part of the original comics.
I'm not sure. Maybe you could check the specific comic series or related forums for a definite answer.