The answer is an assumed identity
I'd say a type of literature, although poetry would be an example of a literary form (as well as a novel, an essay, a drama etc.) so I'm not 100% sure.
Regretful would work because it is a synonym for deplorable
Senor Saguaro is a tall cactus that is outside of Archie's home. It is described as a "30 foot giant that towered over the toolshed in the back of his [Archie's] home." The towering figure provides a talking companion to the rather unique professor, Archie.
When the panda bear thinks about sleeping
His hunger begins to speak
For the food he thinks about leaving
But sleep forces him to stay
When eating, sleep weighs
In sleep, hunger awakens him
Eat and sleep and live
While he strife
In the movie of his life
The panda bear dances
And moves as he fancies
