Underdog
Crossovers
A Cousin's Visit by meyerjon1996 reviews
Mr. Peabody Sherman Penny Paul and Patty visit Providence Rhode Island where they meet Mr. Peabody's cousin and then meet Underdog.
Crossover - Underdog & Mr. Peabody & Sherman - Rated: K+ - English - Adventure/Family - Chapters: 4 - Words: 3,210 - Reviews: 4 - Favs: 4 - Follows: 4 - Updated: 12/17/2020 - Published: 8/20/2019 - Mr. Peabody, Sherman P., Penny P.
It's a Dog's Life by Evil Little Dog reviews
Talking dogs should probably be the least of their worries, but, there you go.
Crossover - Underdog & Avengers - Rated: K+ - English - Humor - Chapters: 1 - Words: 502 - Reviews: 6 - Favs: 12 - Follows: 5 - Published: 7/31/2013 - Iron Man/Tony S., Hulk/Bruce B., Nick F. - Complete