Seaborg 2
Weight: 7.3g
Extremely wide three sided AR.
Right Spin:
Slopes provide strong Upper Attack and some Upward Smash.
Width allows it to reach under opponents, compensating for the fact it doesn't overhang the Weight Disk like Upper Dragoon and its ilk.
As such, it is a competitive Traditional Upper Attack AR, though its lack of Spin Stealing ability prevents it from being useful in Spin Stealing Attack.
Shape, width and protrusions provide some Smash Attack, but not enough to make Whale Crusher a competitive Smash Attack AR
Left Spin:
Spikes on the sides of the AR and rounded outer "screw" details are the main contact points
High recoil and rotational recoil, which inhibits its effectiveness. If it fails to KO an opponent early it struggles.
It does have notable Smash Attack, but is limited by its recoil issues.
Small inverted slopes underneath the rounded screw parts are intended to provide Force Smash, but don't really do anything.
Overall not a competitive part here, but usable in a pinch.
Weight (Hard Edge Mold): 12.7g
Weight (Soft Edge Mold): 12.2g
Very light weight
Two molds, one with sharper edges used exclusively by Takara, and one with softer edges used by both Hasbro and Takara (after production moved to China, presumably). The Hard Edge mold tends to be heavier on average but there is huge crossover between them and the difference can largely be considered negligible. The soft edge mold also often has bumps, generally smaller than those on Ten-Series Weight Disks, at one or both ends, which theoretically could make for poorer balance, though the impact is negligible.
Wide weight distribution, albeit less so than Ten Wide, Wide Defense and Wide Survivor.
Minor use with Attack AR's whose contact points are obscured by wider weight disks (eg Double Wing), though these limitations inherently render them inferior to many other options, and overall the lighter weight of Eight Wide leaves it outclassed.
Spin Gear: Right Spin Gear
Weight: 1.1g each (Shells) + 1.12g (Metal Weight Gear) (Optional)
Standard SG System Shells.
Incompatible with Neo Cores, and thus certain MagneSystem Blade Bases, though Wyborg's SG (Auto Change Version) SG Core Part can be used to allow use with some.`
Generally Neo Shells are preferred for their greater compatibility, mostly their ability to use Neo Cores. For Right Spin, this is particularly relevant with the Heavy Metal Core.
Generally uses a Metal Weight Gear with all compatible SG Cores. This gear helps reduce wobbling/rattling and adds a small amount of weight. It does not, however, work as a gear in any capacity.
Nonetheless, per BBA Survivor, BBA Attacker, BBA Defenser and BBA Balancer having Regular SGs but no Metal Weight Gear, it is not required for legality.
This allows Right Spin Gear Shells to produce the lightest SG setup in the game when using SG (Auto Change Version) and no metal Weight Gear.
Note: The correct name for this part is "Gear" however this name is commonly used to avoid confusion with the Metal Weight Gear in standard SGs.
Weight: 0.61g
Small core part to fit into the Base and be clipped to by the Base Clips, holding the Beyblade together. Also used as a ripcord gear by Bearing Gyros Beyblades.
The plastic part is the second lightest of all Core parts, being just slightly heavier than Wyborg's SG (Auto Change Version) core part.
Incompatible with certain MagneSystem Blade Bases as the tip shafts are too wide for the hole in its base.
With Neo SG Shells, it creates one of the lightest setups, making for what is theoretically the best SG for most attack types not requiring a Neo core or their own shafts, though the difference is generally theoretical only, due to the minimal weight difference, and often going heavier is better for rotational recoil control.
Useful for completely optimizing a Spiral Change Base zombie (which are the only competitive stamina types that do not require a gimmicked SG), as cores are not useful for recoil control due to its low friction and the lighter weight in the centre slightly improves survival. Technically SG (Auto Change Version) may be superior as it does fit, but the difference is likely to be too small to measure.
Weight: 4.4g
SG version of Flat Base
Shortest base in plastics, which can make it an okay choice for Traditional Upper Attack.
Tip shape and material reduce effectiveness as it struggles to flower pattern effectively as well as having limited recoil control and average stamina.
Acceptable LAD which can be useful.
Outclassed by rubber and metal attack tips, but could be a fallback option for Attack.
Can be used for Compacts, but again is heavily outclassed.
Last use is similar to Flat Base in setups similar to Semi-Flat Base Stamina, primarily using Wide Defense and a Compact or smaller-sized Defensive AR, with SG choice depending on the desired effect. This can allow outspins or KOs against less competitive opponents.
In these setups, SG Flat Base has slightly poorer LAD than Flat Base, but has the ability to customize the SG, including use of Left Spin, though the lack of Left Spin Compact ARs with any real offensive ability does cause some issues here.
Overall
Whale Crusher is the intended selling point of this Beyblade, and its huge size is eye-catching, somewhat overshadowing the fact it is an effective Upper Attack AR. Given it is fairly readily available, Seaborg 2 can be a good purchase if one has a good Storm Grip Base to use the AR on.