Thread:FirstDrellSpectre/@comment-30158554-20171125145522/@comment-24200891-20180102190016

On tv tropes appeared an interesting note, in category "wasted perfectly good character"

Lincoln's sibling relationship with Lynn and Lucy has become this for some, with many feeling that their relationship could be very interesting due to them being the middle children of the family. However, while Lincoln has had a few episodes focusing on his interactions with Lucy, Lincoln only has two episodes focusing on his interactions with Lynn.

To the writers there is only one middle child. It would make sense about these 3 as middle children. I wrote in 2nd Loud Bro that Lucy and Lincoln are now middle children with Leo's birth, so they make a pact by painting stripes on their hair.