I love that one! My name is Mordecai Gardson, by the way. And I LOVE keroro!
The title of the episode is called "The episode we wanted to call Tinytoons or Animaniacs, but those were all ready takin."
One more thing (I have 3 Gundams so this is really important to me.)
"It is not what your Gundam does for you, but it is what YOU do for your Gundam."
102 or i think maybe 101
From what I can find Cartoon Network did air Sgt Frog, but only in Spain.
The name "Keroro" comes from the Japanese impression of the sound a frog makes, which is "kerokero."
Episode 161, which is titled "Putata & Mekeke: Zealous Killers!"
yes, in seson 1 of the anime keroro plays pranks on giroro using sumomo in a pekoponian sute to trick giroro that it is natsumi, keroro did this for laughs. episode 38 i beleave
try youtube, or google
Youtube season 2 begins with episode 53
ep 92 it is also in movies 1 2 and 3
Kumiko Watanabe does the voice of Keroro in the original Japanese version of Keroro Gunso. Todd Haberkorn does it in the official English one.
sargent, he is sargent keroro gunso
Arlene makes a cameo appearance in the episode titled "Does Jon Have a Date... with Liz?" from the Garfield and Friends cartoon series. She appears briefly interacting with Garfield.
Yes, Keroro itself is in katakana.