Asapi

  ∧_∧
 (-@∀@)
 (φ 朝 )
 | | |
 (__)_)

Asapi (アサピー) is a writer for the Asahi Shimbun, a left-leaning newspaper. He's generally seen writing biased and made-up articles, or hanging out with his friends Nida and Sina.

He's used as a strawman character by 2channel's far-right userbase.

      ○
      |├───-─┐
      |││ /  / │
      |│⌒ヽ /  │
      |│朝 ) ──│
      |├────-┘
    ∧_∧
    (-@∀@)
  φ⊂  朝 )
    | | |
    (__)_)
      ∧_∧
      (@∀@-)
    ._φ 朝⊂)
  /旦/三/ /|
  | ̄ ̄ ̄ ̄ ̄| .|
  |          |/
    ̄ ̄ ̄ ̄ ̄

Asapi Derivatives:

Sanke

   ∧_∧
  ( *・ー・)彡
 ⊂  産 つ
   人  Y
  し (_)

Sanke (サンケー) represents the Sankei Shimbun, a far-right newspaper. Him and Asapi are nemeses.

Mainicchi

  ∧_∧
 ( ´m` )
 (φ毎 )
 | | |
 (__)_)

         ∧_∧
         (´m`  )
     *~●.φ 毎⊂)
     /旦/三/ /|
     | ̄ ̄ ̄ ̄ ̄| .|
     | 爆弾取材 |/

Mainicchi (マイニッチ) represents the Mainichi Shimbun, a left-leaning newspaper. The "m" is his mustache.

Yomiri

   ∩_∩ ∬
   ミ,■Å■ノ,っ━~
_と~,,, 読~,,,ノ_. ∀
    .ミ,,,/~),  .| ┷┳━
 ̄ ̄ ̄ .し'J ̄ ̄|... ┃

Yomiri (ヨミーリ) represents the Yomiuri Shimbun, a right-leaning newspaper.

Nikei

  ∧_∧
 ( Θ-Θ)
 (φ経 ) 
 $ | $
 (__)_)

Nikei (ニケーイ) represents the Nihon Keizai Shimbun, a newspaper that mostly talks about finance.

     ∧_∧  /中\      ∧_∧  ∧_∧
ピュ.ー <丶`∀´>(  `ハ´)   =(  ´m`) (-@∀@)
  =〔 ∪恨 ̄ ̄∪毒 ̄〕―─〔∪●-* ̄∪φ ̄ ̄〕
   =◎――――――◎  =◎――――――◎

Sources: