SPOILER: At the end of the closing credits, a sneak peek of Frozen II (2019) commences... which turns out to be Ralph and his friends dancing to Rick Astley: Never Gonna Give You Up (1987), essentially rickrolling the audience.
A pink web browser scroll bar appears on the right side of the ending credits. As scroll bars should, it starts at the top and moves downward relative to the list of credits. It reaches the bottom when the credits conclude.
There is a scene in the closing credits: Ralph and Vanellope crash a child's Pancake Milkshake game on her iPad.
During the end credits, for a few seconds, an IP address appears under the "Edited by Jeremy Milton, ACE" name - 198.187.190.1 - this IP address is registered to Disney.
There are absolutely no opening credits; the title didn't even appear until the end of the film.
Messages from various characters can be seen throughout the closing credits.
There is a credit for "Production Babies", which lists the first names of the children born to the crew during production.