Verbal Tic/Fan Works

Examples of Verbal Tics in Fan Works include:

Daneel Rush of TFF fame has given us Higashiyama Sayuri, the Badass Loli Kyuubi No Youko (who won her tails in a drunken bout of poker with Inari-sama) sealed inside of Uzumaki Naruto, who ends most every sentence with Mugyuu, the shortened Mugii, or (if her tails are mentioned or she's exceedingly happy) a "Wai!" followed by wagging her tails.
- Also in the same story is Higashiyama Yurine, Sayuri's aunt, who uses "Hawa" to much the same effect.
Here, Ron's "Bloody Hell!" is lampshaded in that Draco in Leather Pants finds it incredibly sexy and keeps asking him to say it.
Tsuruya's father shares her Verbal Tic in Kyon: Big Damn Hero.
Leif of Soulless Shell frequently ends sentences with "eh". Or at least those might be the points where the sentence is supposed to end, it's hard to tell.
BROOOOOTTTHHHERRR.
In Dragon Ball Z, the Oni add "oni" to the end of every line. The translation gets rid of the tick completely.