Phantoblade

The Phantoblade is a kind of sword used by the Red Fountain Specialists. Upon activating, the handle will generate a blade of any color or shape depending on each sword. Phantoblades can cut through almost any material, and can deflect magical attacks, so they can be used offensively and defensively.

Sky's Phantoblade
Sky's phantoblade is a blue, double edged straight long sword.

Brandon's Phantoblades
Brandon has two phantoblades. The first one is a big, double edged straight green broadsword that he uses commonly. His second one is a double bladed, also green phantoblade, that can be used as a throw-able weapon, or to deflect attacks.

Riven's Phantoblade
Riven's phantoblade is a fuchsia saber, which in contrast to Sky and Brandon's weapons, it's a curved edge instead of a straight one.

Codatorta's Phantoblade
Codatorta's phantoblade is a dark blue, double edged broadsword. One of the edges is completely straight, while the other one ends in a glaive-shaped curve.

Bishop's Phantoblades
Bishop uses two purple hook swords.

Trivia

 * The phantoblades might have been inspired by the Lightsabers from the Star Wars franchise, given the similarities in appearance and function between phantoblades and lightsabers.
 * Despite the phantoblade is the standard specialist weapon, not all Specialists use them. Timmy for example, uses a gun as his default weapon, while Helia uses a gauntlet, and Roy uses a javelin.
 * It is seen that Timmy also has a Phantoblade in the first movie.
 * The name "Phantoblade" is a blend of "phantom" and "blade".