Frock

Frock is the slash ship between Master Frown and Brock from the Unikitty fandom.

Canon
In the show, Master Frown and Brock share an apartment in Frowntown. The two often act like an old married couple.

Master Frown and Brock is shown to be really comfortable with each other.

In episode 18 (Best Best Friends), the two had sang a song about how much they love each other called 'we're the very best friends'.

In the final episode of Unikitty!, Brock was seen hugging Master Frown, much to Master Frown's delight. Brock then had kissed him.

Fanon
A lot of fans speculate that they are married for a long time and that's the reason they've been living together.

Fandom
FAN FICTION

Trivia

 * One of the storyboard artists for Unikitty has drawn Frock ship art.
 * Master Frown and Brock have known each other since early childhood.
 * Master Frown gives Brock a good night kiss every night.
 * Master Frown and Brock are roommates. Living together in Frowntown, the two of them share rent in an apartment together.
 * In season 1 episode 31, It is shown that Brock performed CPR but did the mouth-to-mouth first instead of the pumping.
 * In season 2 episode 1, Brock was blushing when Master Frown denied that his ab shirt is a shirt.
 * Brown is an alternative ship name to Frock.