Overall, Dan Heng and Caelus in the comic have a connection that involves shared goals and conflicts. Their relationship adds depth to the plot. Sometimes they cooperate, while at other times they have differences.
I think the dueling ducks could have the most intense duels. They are specifically described as dueling, which implies a higher level of intensity. However, it also depends on the context and how the cartoon is designed.
You can start by sketching the basic shape of the penguin's body. Make it round and chubby. Then add details like the eyes, beak, and flippers. Use simple lines to give it a cute look.