Each episode's ending credits show the characters who appeared along with their names in English, followed by a segment of everyone dancing and having fun.

[4] It was also aired in Brazil and Latin America by Cartoon Network (as a part of their Adult Swim block), Funimation also included episodes of Mr. Stain on many of its other DVD releases.

The characters in the series are an odd bunch with names that suggest their fate, role or physique: Eaten is a fish that is consumed, Rings is a lizard that uses rings as an accessory around its neck, Pylon is a crab that uses a pylon as headgear, and Policeman is an officer of the law who comes to the alley on his rounds.

[8] Different minor characters, such as Squeezed dog and Masked monkey, appear in the series as inhabitants of "Junk Alley" besides Mr. Stain and Palvan.

Others like Lost kitten and Stephanie, a young girl, accidentally enter the alley and are helped to find a way out.

The story revolves around Stain who sees a woman living in a high rise apartment and immediately falls in love with her.

John Sinnott of DVD talk compared it to Charlie Chaplin,[14] commenting that it is "very funny and filled with well thought out slapstick,[14] adding "This is a very fun and touching show and one of the better anime sets to be released so far this year.

"[15] He was impressed by the non use of dialogue, saying that the bitter sweet moments in the show "gives it heart",[14] his opinion was more mixed on the fourteenth episode which, he felt, "did drag a bit.

[17] He wrote, "You usually get a good laugh at the antics of Mr. Stain and his friends, but sometimes things get dramatic in a thought-provoking way that gets to you.

[18] He acknowledged Mr. Stain to be "perfect for a nice break from reality when you want some laughs with the occasional moral message"[17] and suggests that even non-anime fans could enjoy it.

[20] He too compares it to the Looney Tunes shows,[21] specifically praising its choice to be visually oriented rather than relying on conventional dialogues.