This living things field guide can be used as the culminating activity for a living things unit or for a simple research project on living things, habitats, interdependence, and survival needs. Students' "Pokedecks" entries could be one page in a classroom created field guide focused on a specific ecosystem, or each team could create their own field guide and "battle" the animals they have collected. This activity is such a fun way to "catch them all" while meeting the Standards for heredity SC.L.16.1 and interdependence SC.L.17.1 and SC.L.17.2.
This could also be adapted for fictional characters. For example, if you were reading "The Giver," you could base this on the protagonist, Jonas. In the Evolutions section, you might write naive, aware, and risk-taker as his evolutions. His weakness, could be fear, connection to family, or the community's values. Under stats, his HP (or health) would differ based on the part of the story you used (and would need to be justified), while his attack would be strong since he has the power to cripple the entire community. The summary would include reasons the character is significant, and so on.