“Ah, Poko-tan has logged in!” (あ、ぽこたんインしたお！, A, Poko-tan in shitao!) is a Final Fantasy XI-related kopipe that emerged on March 7, 2004 in a linkshell¹⁾ complaint thread.²⁾ It also contributed to the trend of ending sentences with “-o” (～お), seen in Naito Horizon and Yaruo.

93 ：既にその名前は使われています：04/03/07 03:11 ID:1FBId3zq
うちのｌｓは、平均20～25ほどで最大84人いるぽ
それでいて、マターリした雰囲気のいいｌｓ
今でもＦＦ続けてるのは、このｌｓに入ったおかげだなと思う。
おかげで毎日仕事から帰って、インするのが楽しみでしょうがないｗ

おいら「おいすー＾＾
たるＡ「あ、ぽこたんインしたお！」
一同「こんばんわ～＾＾」
エルＡ「よーし今日もどっかいくかー＾＾」
一同　「おー＾＾」

93 ：That Name is Already in Use：04/03/07 03:11 ID:1FBId3zq
My linkshell averages around 20-25 people with a maximum of 84.
And yet, this linkshell still has a nice, helpful atmosphere.
I think the only reason I still play Final Fantasy is because I was blessed with this linkshell.
Thanks to them, I look forward to logging in every day after work, lol.

Me 「What's up? ＾＾
Tarutaru A 「Ah, Poko-tan has logged in!」³⁾
Everyone 「Good evening~ ＾＾」
Elvaan A 「Alright, where are we going today? ＾＾」
Everyone 「Oh ＾＾」⁴⁾

　　　　　　／/
　　　　／　.人
　　　 / 　（＿_） ﾊﾟｶ
　　　/ ∩(＿___）　　　Ah, Poko-tan has logged in!
　　 /　.|（ ・∀・）＿
　　/／ |　　　ヽ／
　　"￣￣￣"∪

The artwork shows “Tarutaru A” (たるＡ, Taru A) with shit on its head, announcing “Poko-tan” logging in, but he's often mistaken for “Poko-tan” himself and everyone knows it as the “Poko-tan AA” (ぽこたんAA).

　　　　　 ,-へ,　 , ﾍ
　　　　／,ヽ_,_i=/__,」
　　　 /　,'　　 ｀ｰ ヽ ﾊﾟｶ
　　　/ ∩〈」iﾉﾊル.!〉　　　Ah, Moko-tan has logged in!
　　 /　.|i L>ﾟ ∀ﾟﾉiゝ＿
　　/／i>i ir^i ｀T´i'i| ／
　　"￣￣￣￣￣∪

“Moko-tan has logged in!” (もこたんインしたお！, Moko-tan in shitao!)⁵⁾ is a Touhou Project variant that features Fujiwara no Mokou emerging from the floor hatch.

Mokou 「What's up? ＾＾
Keine 「Ah, Moko-tan has logged in!」
Everyone 「Good evening~ ＾＾」
Mokou 「Alright, where are we going today? ＾＾」
Everyone 「Oh ＾＾」

• This has nothing to do with “Mario has logged in” from Toilet in Wonderland.

• Poko-tan (Taru A) the 2ch AA Illustration Project
• Ah, Poko-tan has logged in! on Niconico Encyclopedia