Ultimate Way Big when he was first Used By Xadim to exact his revenge on Imad.
Ultimate Way Big is an evolved To'kustar appearing in Imad 10. Originally, Xadim intended to torture Azmuth into unlocking the Ultimatrix's most powerful form. However, anticipating his possible failure to do so, he instead worked on a backup project: using artificially controlled cosmic storms, he incubated a To'kustar DNA strand to use as a heavy hitting form, not wasting time trying to unlock the one already encoded in the Ultimatrix. The normal form was first used by Xadim as a counter to most of Imad's Ultimates, and was evolved into its ultimate form to take down Ultimate Masquerade, brutally beating him around for the first half of their face-off. This form was so powerful it was on the verge of killing Imad, who was only saved when his own form's instincts took over and unlocked more of U.M's powers.
While this form was regarded as Xadim's signature alien, it was also used by his counterpart in a few occasions (like when attempting to demolish Necros in a fit of rage, in vain).
List of Powers:
This version of Ultimate Way Big has a huge affinity for the usage of cosmic radiation for under many offensive and defensive forms, being even capable of generating blasts from its eyes. It is able to engulf the battleground in a cosmic storm (its natural element), drawing strength from it while making the mere act of standing there dangerous for its opponent. Similar to Mana, U.W.B can shape cosmic radiation into solid constructs, from weapons to forcefields. Akin to Diamondhead, it can sprout spikes of cosmic energy from the ground when amidst a cosmic storm.
It's also gigantic, like A LOT, dwarfing its normal form in comparison. This new physique comes with immense resilience - able to unflinchingly take copious amounts of punishment without a single scratch - and strength, able to level down an entire city bare-handed in little to no time. Finally, U.W.B. has brutal, savage instincts that influence the user into lashing out at the adversary as destructively as possible. Combined with the monstrous power at its disposal, collateral damage and even complete annihilation of the surroundings are unavoidable.