About Aster
Aster is an 
S Level 
Hypogean 
Mage hero in AFK Journey. An ancient being from the Sea of Stars, heralding its arrival with blazing stars and devouring all things with black holes.
Gender Male/Voice actor 関原 丈夫 [JP]
Tier list ratings
Hero stats
Base stats
Base stats before gear, charms and the Exclusive Weapon. Bars compare with the strongest hero at the same ascension and level. Lv 240 is the cap before the Resonating Hall.
EX weapon stats
HP, ATK, Phys DEF and Magic DEF add that share of the hero's base stat; the other stats are flat. Bars show progress toward EX +29. Rivalry Stats only count in Rivalry Mode. The weapon skill upgrades at EX +5, +10 and +15. The Rivalry Mode skill unlocks at EX +27. Compare every weapon
Skills
600 EnergyAster consumes 600 Energy to target 1 tile, summoning a Star to deal 360% ATK damage to enemies within 1 tile. He then supercharges all of his Stars, causing each Star to deal 240% ATK damage to enemies within 1 tile and stun them for 2s. Supercharged Stars burn for 6s, dealing 36% ATK damage per second to enemies within 1 tile. Up to 3 of Aster's Stars can exist on the battlefield at the same time. If this limit is reached, summoning a new Star replaces the oldest Star with the fewest enemies in range. Only 1 of Aster's own Stars can exist on each tile. When cast automatically, this skill prioritizes tiles with the most enemies that do not overlap with any of his other Stars.
Level 2: Increases the damage dealt when a Star is supercharged to 270% ATK, and its burn damage to 42% ATK per second. (Unlocks at Level 51)
Level 3: Increases the damage dealt when a Star is supercharged to 300% ATK, and its burn damage to 48% ATK per second. (Unlocks at Level 111)
Level 4: Increases the damage dealt when a Star is supercharged to 330% ATK, and its burn damage to 54% ATK per second. (Unlocks at Level 171)
Level 5: Increases the damage dealt when a Star is supercharged to 360% ATK, and its burn damage to 60% ATK per second. (Unlocks at Level 231)
9sPassive. Whenever Aster summons a Star, 1 Planet is created on an adjacent tile, prioritizing the tile occupied by the adjacent enemy with the lowest HP. This deals 120% ATK damage to the enemy on that tile. Each Planet orbits its Star once every 6s, dealing 90% ATK damage to enemies it collides with. An enemy can take this damage 1 time every 3s. Whenever a Planet completes an orbit, it deals 180% ATK damage to enemies on the central tile. Active. Aster commands all his Stars and Black Holes on the battlefield, pulling enemies within 2 tiles of them toward the nearest Star or Black Hole and dealing 270% ATK damage.
Level 2: Increases the pull damage to 300% ATK. (Unlocks at Level 71)
Level 3: Increases the pull damage to 330% ATK. (Unlocks at Level 131)
Level 4: Increases the pull damage to 360% ATK. (Unlocks at Level 191)
12sAster fires pulse beams along 3 lines that cover the most enemies, dealing 210% ATK damage to enemies hit. He also gains a shield equal to 90% of the total actual damage dealt by this skill. The shield lasts 9s. Each time a pulse beam hits an enemy, it also reduces the target's shield value by up to 270% ATK.
Level 2: Increases damage dealt to 240% ATK and shield value reduction to 300% ATK. (Unlocks at Level 91)
Level 3: Increases damage dealt to 270% ATK and shield value reduction to 330% ATK. (Unlocks at Level 151)
Level 4: Increases damage dealt to 300% ATK and shield value reduction to 360% ATK. (Unlocks at Level 211)
Aster increases his ATK by 2% during battle. Whenever he summons a Star, his ATK increases by an extra 2%, up to 6%. After converting Stars into Black Holes, his ATK increases further by 6%.
Level 2: Aster increases his ATK by 4% during battle. Whenever he summons a Star, his ATK increases by an extra 4%, up to 12%. After converting Stars into Black Holes, his ATK increases further by 9%.
Level 3: Aster increases his ATK by 6% during battle. Whenever he summons a Star, his ATK increases by an extra 6%, up to 18%. After converting Stars into Black Holes, his ATK increases further by 12%.
Aster expands Gravitic Maw's pull range to 3 tiles. Aster gains 60% Energy recovery efficiency before converting his Stars into Black Holes. Once converted, he ascends to a higher dimension and becomes permanently invincible until he is the last surviving hero on his team.
Progression systems
Passive. After summoning 3 Stars, Aster permanently converts all his Stars into Black Holes and devours the Planets orbiting them. From then on, Stars summoned through Stellar Flare are created directly as Black Holes. Initially, each Black Hole deals 30% ATK true damage plus extra true damage equal to 2% of the target's max HP to enemies within 1 tile every second. The total damage cannot exceed 60% ATK. When supercharged by Stellar Flare, Black Holes do not burn. Instead, each Black Hole drains 30% ATK and 30 Haste from every enemy within range. The ATK drained increases the damage of all Black Holes, while the Haste drained increases the frequency at which they deal continuous damage. These increases cannot exceed 60% and 60%, respectively. The cumulative ATK a single enemy can lose through this effect cannot exceed 60% of Aster's initial ATK.