This Weekend Japanatainment is all about placing one anime in another's opening animation sequence; or OP as we in the business like to call it. These are usually not American made, because according to modern-day scientists, there happens to be a sequence of genes that gives the Japanese great ability in placing hilarious and awesome things in other’s opening sequences. Fittingly named the MAD gene.

However, these are not your average MADs you have probably seen here or there. These ones were specially picked for their rarity, so I can honestly state that you have never seen these ones before… hopefully. Check them out after the jump!