There's also his 2014 cameo in Pearls before Swine:

https://www.gocomics.com/pearlsbeforeswine/2014/06/04

https://www.gocomics.com/pearlsbeforeswine/2014/06/05

https://www.gocomics.com/pearlsbeforeswine/2014/06/06

And the story: https://stephanpastis.wordpress.com/2014/06/07/ever-wished-t...