In Hitchiker's Guide to the Galaxy, the computer Deep Thought that was designed to give us the ultimate answer to everything, which was 42, ended up designing the ultimate question that 42 is the answer to, creating a far more powerful supercomputer, which ended up becoming Earth.
Cronus was overthrown by his son, who he created and whose power he received from him.
Hercules, given power by the Gods, has proven to be more powerful than them on multiple occassions, such as saving them from Gaia's Giants.
In Christian Mythos, Jesus is still God, and thus has all that thing going on, but additionally can be used as a vessel to forgive mankind and generally is a better way to interact with the world.
Command Shepard MII is able to almost single-handedly bring down Cerberus, the organization that created him, in Mass Effect II.
The Sentinels in X Men are far more powerful than the military that created them, and wipe them out.
Ultron rebelled against his creator and defeated him, Antman, and then his own creation Vision was more powerful than him and defeated him.
In Incredibles, Syndrome is defeated by his Anti-Superhero Robot.
The Robots in the Matrix are far better than humanity in like, every single way, and easily defeat them for being dickheads.
Planet of the Apes had the genetically engineered apes overthrow mankind.
The robots in Westworld are able to kill a fair few security each and are better than the guys who created them.
The Elder things were wiped out by their slave species, the Shoggoth.
IG-88 from Star Wars was far greater than his creators, murdering all of them immediately and then taking over the death star until it's blown up in New Hope.
The creatures from the Island of Doctor Moreau are easily capable of overthrowing him when they stop being scared, given they're way better than him.
In Star Trek, the Klingons murdered their owns gods mythologically speaking.
In the new Wonder Woman, Ares killed the Greek Gods who created him.
In Warhammer 40k, the C'tan created the Necron out of the Necrontyr, and were murdered into submissive, broken apart and used as Pokemon afterwards.
The White Walkers of Game of Thrones had magical abilities that were way more powerful than their creators, the Children of the Forest, who were almost wiped out.
The Unsullied created by the Slave Masters easily wiped them out and were far, far more powerful than them.
The Transformers and Deceptacons were more powerful than the god that created them, destroying him.