Ideas to Player666 Go! Mod

1-Apparence

Make it a bit higher quality and make him custom animations because i think the model is too "basic" and he just looks like a animal with his model

2-Behavior 

Make him provok paranoia from the players by making signs and create a custom entity that has the same model , but he only watches the player and disappears if he's too close of him

3-Encounter

Make him try to spawn 5 blocks upwards the player . And my idea is to make him disappear when he is not hunting you for too long , like 2-3 minutes .

you will have to use procedures, I guess

If something must happen, do

I could help implement it. I mean...

it'd be a great pleasure joy to do so.

You could export your procedure and send it on a google drive. A collection of useful procedures would be a good sollution if you plan to help more people

that sounds good, what a great idea

That... that doesn't need to be run every tick. Use whatever event is changing the "superfry" attribute to change all those attributes instead. That's going to cause at least a little lag and servers will not enjoy running that on multiple players.

Also to add on to my other comment, you should be modifying the attributes with + and -, not setting it directly as it will break other mods that touch the attributes.