does anyone know if there is a purple power for speed? and if so what is it? and can you give me the name of the character that has that power?

Yup, Forceblast. Blue Beetle, Big Barda, LE Rok Krinn, and Superman to name a few.

Force Blast. It can be found on just about any Superman, Hypertime REV Flash, and the Blue Beetle. It can be found on other figures, but I just haven't looked too closely for it.

i thought it was... thank you for your help

The most recent figure that comes to mind is Polaris
-T.

Don't forget Zatanna and Ronan the Accuser

Here's a list of everyone with Force Blast according to Battle Planner:

• Blue Beetle R/E/V/LE
• Changeling R/E/V
• Weather Wizard R/E/V
• Flash R/E/V
• Superman R/E/V/U/LE (Hypertime)
• Thomas Oscar Morrow LE
• Zatanna R/E/V/LE
• Bizzaro U
• Pharzoof LE (Parademon Scout)
• Rokk Krinn LE (Cosmic Boy)
• Samandahl Rey U
• Diablo R/E/V
• Ronan The Accuser U
• Rocket Red V/LE
• Big Barda R/E/V
• Maxima R/E/V/LE
• Silver Swan U
• Superman U (KC)
• Cyclops E/V (Ultimates)
• Magneto LE
• Polaris R/V
• M.O.D.O.K. U

love forceblast! it's a good anti stealth tactic. or use it with another figure running barrier to put some damage on a fig with no damage reducing powers (KC GL I'm looking at YOU!!).
remeber you DON'T need to roll for it to be used