Based on the themes presented in both "The Odyssey" by Homer and "Thor’s Serpent" by K. L. Armstrong and M. A. Marr, the universal themes that can be identified in both passages include:
- Adventurous quest: Both works involve characters embarking on significant journeys filled with challenges and adventures.
The other themes—regrets of old age, good versus evil, and coming of age—may also be touched upon, but the adventurous quest is the most prominent theme in both texts.
Therefore, the answer is: Adventurous quest: Yes Regrets of old age: No Good versus evil: No Coming of age: No