Crab Diver
From Random Booster 11, one of three prize Beyblades alongside Orca Diver and Manta Diver, each of which came in Red/Orange, White, and Blue, with Red/Orange being the prize color for Crab Diver. Crab Diver was the only one of the three not to be released by Hasbro.
All things become crab
Weight: 4.6g
Not useful in Right Spin as contact points are angled back, resulting in recoil with little power.
In Left Spin, large claws form wide contact points, however these are not particularly well angled.
Has huge power, but also suffers from tremendous recoil - more than even Hayate Attack Ring.
While it has similar or greater power than a lot of the top-tier Smash Attack ARs, it often self-KOs as it KOs the opponent.
As such, not top tier but usable and one of the best Smash ARs outside of the Competitive Combos List
Can be taken to a competitive level using SG Grip Change Base Tip, especially a more worn, grippy one, however this is obscure and recoil is still a concern.
Weight Disk: Random
Possible Weight Disks are: Star Attack, Revolver Attack, Ten Heavy, Ten Balance and Ten Wide.
Spin Gear: Neo Right Spin Gear (Metal Weight Version)
Weight: 1.15g ea (total 2.3g)
Generally preferred to regular Right shells due to being compatible with all SG-Compatible bases, in particular for being compatible with Neo SG Cores and the Heavy Metal Core.
This means they are a necessity for Compacts, Weight Based Defense, Force Smash, Traditional Upper Attack and Driger V2 Combinations, at least aside from the rare occasions Left Spin is desired for one of these types, in which case Neo Left Shells are preferred.
Overall a crucial competitive part, but thankfully exceedingly common.
Weight: 2.5g
Only compatible with Neo Shells.
Has a cylindrical metal part in the centre to add weight
Slightly lighter than Magnecores, which limits its usefulness, even for Attack Types where the small difference between it and other cores in terms of weight means it generally fails to find a niche, or at least fails to stand out as significantly better in most cases.
This does not mean it is outclassed for all setups, however, odds are it provides the right mix of recoil control and speed for some setups, it is just that the difference it would be best by would inevitably be quite small.
Does still work well for Attack Types in general, despite usually being outperformed by other options the difference is quite minimal.
Blade Base: SG Semi-Flat Base
It is possible to get alternate Blade Bases with Random Booster beys, especially with non-prize Beyblades. In Crab Diver's case, the most common alternates are SG Flat Base and SG Sharp Base.
Weight: 4.7g
SG version of Semi-Flat Base.
Tip is slightly differently angled from Semi-Flat Base, being more shallow. Wears quite quickly.
Semi flat tip is nice, being predictable and not difficult to use, but Metal Change Base has better attack, defense, and survival, while Metal Ball Base once worn has a similar but more effective tip shape due to better precession.
It is generally outperformed as a result of these factors.
In addition, Metal Ball Base with Six Metal Balls has a similarly well-behaved tip but 1g more weight.
Nonetheless, it is a competitive part for Compact Customizations as it does work well and they remain competitive using it - just perhaps slightly less capable than with alternatives.
Overall
While Scissors Arm is a powerful AR, the excessive recoil thwarts it. In addition, the only truly competitive parts of the Beyblade are generic. As such Crab Diver is best left as a collection-only Bey, though its parts can be used in a pinch.