Klasky-Csupo, Inc. is an animation studio in Hollywood, California, that was popularly the studio behind Nickelodeon's Rugrats (1991-2004).
1989–1991 (print logo) 1989-1999, 2001-2002 (on-screen)
1991–present (print logo) 1998-2008 (on-screen logo)
First introduced with Rugrats in 1991, this logo is well known for being used in the "Robot Face" end-credit bumper.
2002-present (print logo) 2003, 2008, 2016, 2018 (on-screen logo)
First appeared on Klasky Csupo's Website. And first appeared on-screen in Rugrats Go Wild in 2003.