Is it possible to make a sharp dive during auto flight?

This is a rather funny picture.
This is an extreme example.

With an auto mission altitude like this, can my airplane make a steep altitude dive?

Of course, there will be limits due to physical problems, but I want to achieve rapid altitude changes up to that limit.

For example, airplane may be possible if its pitch angle is dropped close to -80 degrees and the throttle is raised to 100 percent.

I’ve seen a lot of people do stunts like this with manual flight.

The example above is also an extreme example.
If it is possible for a human to operate, I wonder what it would be like during an auto mission.