MA-21 Aero Knight MS

Initial Release: Late Autumn 2004, Starter MA-21 (White)

Additional Releases: None.

Bit Protector - "Large Type"

Should be noted that BP Size Type on initial release is not consistent for every cycle of production or re-release. Being reproduced the following year could mean a  different BP Size Type for a given Beyblade. In Aero Knight MS' case, it is unlikely it is anything but Large Type, since HMS wasn't in production long enough after its initial release to be re-released. 

Attack Ring (AR)

Knight Crusher, ~22g.

Best Possible Combo:

AR: Knight Crusher (Right-Spin)

WD: CWD Defense Ring (with Metal CWD found in RBA2)

RC: Grip Flat Core (Ultimate Version)

Game Plan: With a combo like this, given how ineffective Knight Crusher can be at times, it is best to put your all into ensuring your launch is perfect. Sliding/Catapulting or Banking with pinpoint accuracy to greatly improve your chances of landing multiple successive hits is ideal, since Knight Crusher isn't an AR that can take one hit and run with it, like Circle/Samurai Upper or Advance Attacker. If you must use Knight Crusher, this is the combo to use it on, since it simply cannot do well on either Defense or Stamina setups.

Courtesy of @DerexGT

Weight Disk (WD)

Circle Wide

Running Core (RC)

Aero Core & Aero Wing, ~5g. (confirm)

Best Possible Combo:

AR: Circle Upper (Right-Spin)

WD: Circle Wide

RC: Aero Core & Aero Wing

Game Plan: This combo put the widest and most open-designed HMS parts together, since there is little way this RC setup can be truly competitive. It may be fun to play around with, and maybe not completely impossible to win casual matches either! Another potential option is using Phantom Fox's CWD Circle Attacker in Force Smash mode instead of Aero Wing and Circle Wide, to try and smash your opponents into the stadium with your tall RC. Equally entertaining, but tough to pull off. Also may not be legal since Aero Wing may be required on Aero Core at all times.

Aero Core, Courtesy of @DerexGT

Aero Wing, Courtesy of @DerexGT