Kidou Senshi SD Gundam Mk-I

Like Kamen Rider SD, the Gundam SD series is a chibi parody. Everything's done for laughs, and they're chock full of shenanigans, bad puns, and general mockery of the actual storyline.  

Short anime remaking old classic mecha (Gundam/Transformers) into a chibi style and parodying the original franchise. 

Parodies of a certain anime, redesigning characters into chibi form and making them play out comedic situations. Both have short episodes. 

Short anime remaking classic old mecha shows for parody purposes with some major design changes (chibi characters/anthropomorsing into girls). Both have plenty of references to the original shows that rewards fans for their knowledge as they understand the joke. 

Both are short parodies of older mecha series. Both are comedies featuring chibi versions of characters from parent series. Both are not to be taken seriously. 

Both are short parodies that take characters from 80's - 90's franchises and turns them into chibi forms. Althrough made by different studios, they have a similiart artstyle and character design of the chibi versions. 

Anime parodying a famous 70's franchise (Gundam/works of Nagai Go), reimagining the cast as super deformed characters and making fun of the plot with plenty references to the original (serious) story.