A robot designed to help people. But Stein modified it to become a war machine. Sentinel becomes the basis for a collection of mass-produced robots. These mass-produced robots are the steamers.
Deploys a drone dealing ATK [38/57/76]% magical damage 5 times.
[ values are 1-chain / 2-chain / 3-chain ]
Upon being healed, immediately deploys a drone dealing ATK 76% magical damage 5 times. (Once every 3 sec)
From the Goddess's Room or your party, open this hero's menu and promote it (for Gold and Honor) into a random one of these next-grade heroes.
A weapon bound to this hero. It upgrades along the grade 7 to 9 chain and changes this hero's passive while equipped.
Crafted and enhanced at the Smithy (its Soulbound Weapon button) from Iron and Soulbound crystals (from the Fortress of Souls raid or the Arena shop), plus Honor and Gold. Bound to its hero; not forged like an ordinary weapon or found as a drop.
Alternate appearances for this hero. A costume is purely cosmetic: it shares the hero's stats, skill, and passive.
Another personality module that Stein brought back through a dimensional gate. Sealed off from his medical legacy code and rebooted in a full-armor frame that retains only the combat algorithms, this Sentinel no longer asks after one's health before opening fire. The traces of the android Stanya once dreamed of sleep somewhere deep beneath thick armor.
Sentinel, the combat android born from Stein's hands, has no circuit for hesitation. The moment a target is entered, six blades take their positions with zero margin of error.