A lot of my old works up to age 14 or so were pretty much ripoffs.
Like, one notable one was a Teenage Mutant Ninja Turtles + Teen Titans ripoff. Just with a variety of anthopomorphic animals with superpowers. Psywolf and Karate Cat are the ones I remember. Psywolf was a stereotypical emo, and Karate Cat was just... Stupid.