Hikki (ヒッキー, Hikkī) is an AA character, representing hikikomori, which came from Ayashii World in 1999, making him older than Mona. He is a young man that sits in the corner of their room, depressed and pessimistic, near his father's 'deceased portrait' (遺影, iei), and will hang himself.

They were once popular back then, especially when Hikki's Christmas came out in late 2000, but he'd later be phased out with similar AA like Dokuo or NEET, so he isn't really used much these days.

　　∧ ∧
　 (,,-＿-) 　←Decided by Gure-chan!
～（＿__ﾉ

　　　　　∧ ∧ 　　　　 ( -＿-)　　　　　　　　　　　　　　∧　∧
　　　　 (,,-＿-)　…　 (U　　)　Walking together...　 　 （,,‐＿‐）……　 　（‐＿‐）
　　　～（＿__ﾉ 　　　　 U U　　　　　　　　　　　　　　～（＿＿ノ　　　　　　（∩∩）

　　　　　∧ ∧ 　　　　　( -＿-)
　　　　 (,,-＿-) ｸﾞﾚｸﾞﾚ (U　　)　It's been a long time since I heard Gure...
　　　～（＿__ﾉ 　　　　　 U U

Gure-chan (グレちゃん), or Gure (グレ), is Hikki's pet that emerged around February 5, 2002¹⁾ and they are the only Hikki variant that somewhat stuck around.

• They speak in half-width katakana, but I can't really convey that in translation.
• Hikki has been named 'Masao Komori' (小森マサオ, Komori Masao), but this isn't really used much.

• Dokuo - Similar personality, but more focused on the single male mindset.

• Hikki on the 2ch AA Illustration Project
• Hikki (AA) on Pixiv Encyclopedia
• Hikki (ASCII Art) on Niconico Encyclopedia