The Grandfather 2 tee design is for Rick and Morty and The Godfather fans.
The concept is a mash up and parody of Francis Ford Coppola classic The Godfather trilogy and Cartoon Network's Rick and Morty. A concept that has been done by a few different artists and fans. Rather than have Marlon Brando as The Godfather holding a cat it has Rick holding Squanchy. In the logo instead of a hand holding puppeteer strings it is a hand holding Rick's portal gun. It is a good nod to both franchises and it works because Rock Sanchez is a badass.
As for the artwork, the characters are drawn exactly as they are in the cartoon with no variation so no artistic creative points are given. It all has to do with the layout which is also derivative. The colors and shading are nicely done.
While this is The Godfather pose it is definitely more of a Rick and Morty fan tee.