Robot and Monster Crossovers
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The Argus Butterfly by AeonXBorealis reviews
Robot Default's life isn't quite as normal and hum-drum as he believes it to be: Things start turning upside down when he discovers his biological mother is Nicole Watterson, his cousin's imaginary friend Princess Invisible is real, and his father Bricklin has an ambiguous and strange past/connections with the God of Death's son, Death the Kid. Drama and heartache ensue.
Crossover - Amazing World of Gumball & Robot and Monster - Rated: M - English - Drama/Supernatural - Chapters: 8 - Words: 77,644 - Reviews: 2 - Favs: 4 - Follows: 1 - Published: 5/19/2013
Company? by OneWiththeChi reviews
First ever Robot and Monster SpongeBob crossover ever on this site. It really isn't anything special, but it still is something. So enjoy this quick fanfic.
Crossover - Robot and Monster & SpongeBob SquarePants - Rated: K - English - Adventure/Humor - Chapters: 1 - Words: 270 - Reviews: 3 - Favs: 2 - Follows: 1 - Published: 9/15/2012 - SpongeBob - Complete