Darkness Towa can be used on Extreme AGL and “Rainbow Villains”.
Extreme AGL
Despite the fact that there are currently better units to run as support on this team, Darkness Towa is a prime option if you’re taking on Super Battle Road with her healing Passive. A very good floater in general that can potentially generate a lot of ATK if she shows up when your HP is at 30% or below.
Supreme damage is a low multiplier, but this unit is not meant to deal damage to the enemy; being able to lower the enemy’s ATK by 20% is nice and it adds more utility to this unit; her Ki multiplier is also low, but she doesn’t really mind that since she is a support unit.
Leader Skill
The Leader Skill is nothing amazing, but SS3 Gohan (Teen) can be used a Sub-Leader for Battlefield 2.0.
Passive Skill
The base support Passive is very good when you consider it’s not restricted to a specific element and it’s applied to any Extreme type; in addition to this, once per battle, when your HP is at 30% or below, Darkness Towa will recover your health completely and add a 50% ATK boost to her support Passive on top of the base 25% for one turn. With her Passive completely active, Darkness Towa is one of the best support units in the game, giving Ki, a lot of ATK and even DEF.
Link Skill
Darkness Towa’s links are very underwhelming; lacking Fear and Faith and Big Bad Bosses is a problem for an Extreme type unit, but at least her Ki support Passive kind of makes up for that; her ATK links are also pretty much useless on any likely line-up of units for the teams you are going to use her on so far.
This is not a unit that you are likely to use on “Rainbow Villains”, but it should be noted that Towa is the one who shares the most links with Darkness Towa so far; “Battlefield Diva” and “Scientist” add up to 4 Ki and “Master of Magic”, “Rival Duo” and “Demon Duo” equate to 45% additional ATK; in addition to this, factoring these unit’s added Ki from their Passives translate to an automatic Super Attack for both of them.
Full Power Boujack on this team is not going to have his TUR version on rotation, since that spot is designated to [Punishment of Anger] Goku Black (Super Saiyan Rosé), so he can greatly benefit from linking with Darkness Towa and have “Thirst for Conquest” active in addition the her support Passive.
Hidden Potential
Darkness Towa is not really that first unit I would advise to put orbs into; the unit already gets a lv.5 Additional, which is actually not bad since she can potentially lower the enemy’s ATK a second time with another Super Attack, and that’s enough in terms of investment.
Should I use Elder Kais/Grand Kais?
Since Darkness Towa doesn’t have a farmable Super Attack and she is not a unit meant to deal damage, I wouldn’t use any Elder Kais/Grand Kais to raise her Super Attack; a low damage and Ki multiplier in addition to extremely niche ATK links, make her a unit solely designed to support her allies.