Can I buy cartoon, comic or band names on buttons, pins, add ons and things of that nature to personalize clothing for sale?

It is likely that you will be liable for trademark infringement. Retain an experienced Trademark Attorney to provide you with a clearance opinion...

You should be fine, you have not substantially modified the cards or made unlawful copies. If you are concerned retain a copyright attorney to...

Should I file an harassment case?

Ask Facebook to take the page down. Call the police! Not an Intellectual Property question.

Is it better to hold on to Publishing, and give away larger percentage of writers share, or split it all evenly?

Please refer to my response to your other question.

There are many considerations, but the bottom line is always the bottom line. You are best off controlling your contribution as the writer's share....

Consult an FTC lawyer, but yes, you need proper labeling.

It certainly wouldn't hurt to keep hard copies. Usually scanned copies are considered sufficient, but there may be a California statute on this...

Can I use the background image of a movie poster for my school fundraiser flyers?

What you describe would be considered Copyright Infringement. If you want to use or modify the poster for your fundraiser, contact the copyright...

Do I need to ask anybody's permission

As long as it is a fictional story and does not copy any existing works, then you don't need permission. If you have concerns, I recommend that...

How can I get this resolved, and get compensation?

The best way to pursue this matter is to retain an experienced Copyright attorney who will do the following on your behalf: 1. File for an...