In the Street Fighter series, especially earlier on, Ryu and Ken possessed excessively large eyebrows, apparently made from M. Bison, Balrog, and Guile's missing eyebrows. Ryu's are so big at times that they overlap his headband.
The Japanese releases of Ratchet & Clank games gives Ratchet very thick, bushy eyebrows that many American fans refer to as "woolly bear caterpillars" - his eyebrows are fairly thick in the American version as well, but the Japanese release specifically stated he was given thicker eyebrows "so fanartists would have a place to start drawing from."
Asuka 120% features the tomboyish Ryuuko and shy and polite Kumi, both of whom exhibit this.
Bowser in the Super Mario Bros. series has a pair of big bushy red eyebrows that make him look very intimidating. Bowser's eyebrows seem to be in a curved shape so that he always looks angry or at least irritated.