Same thing happened to the Golden Age Green Lantern. It can happen to anyone.

I was one of those weird kids who always got upset when cereal mascots were denied their own cereal.

Yes, kids were always stealing Lucky's Lucky Charms, but he usually just sang a little song or something and then shared it with them. It was clearly some sort of ritual between the Leprechauns and the children of mortals. There was no way a human child could catch the keeper of the Charms, but if they put up enough of an effort, little man would reward their futile determination with a bowl of sugary corn bits. It was the least he could do for these poor creatures, doomed to die so soon.

And then there was the Trix Rabbit. Fuck that guy.

Lucky the Leprechaun doesn't even have an Irish accent anymore...

The accent is the first to go. Soon, all his powers will fade, him being parted from his native soil from which they spring. And he too will die, lonely and demented, having forgotten he was ever an immortal.

After that, there will be a series of commercials where a coven of children try to bring Lucky back to this realm by sacrificing Christian babies on a pagan altar. Lucky gains a few moments of power in this world and gives his coven bowls of cereal.

The cereal industry is notoriously anti-Catholic.

To be fair that cookie crisp dog earned its spot. CooOOOkie Crisp!

What ideas did they reject?

Irish cereal burglar. Cop shows up and assumes the cereal belongs to the crook. He tackles each child, banging their heads repeatedly onto the hard pyramid floor.

There's lots of ways to go with this one. Cocoa bird shot while having a coo-coo seizure, "colored" toucan shot through a car window while trying to get his ID out. Sugar bear gets life in prison for selling $20 worth of pot to an undercover cop.

Meanwhile the Quaker guy's carrying a semi-automatic near city hall without issue. I know he needs it to make puffed rice, but come on.

Wolves' lives matter.