Stronger is the horse that Doc Q rides on. Because Doc Q is seemingly always sick, he rides on Stronger all the time, since the doctor tends to collapse if left unsupported for some time. However, Stronger is just as sick as he is. He is classified as a Type A creature, "Big Friendly".
Stronger is a pale blue horse with very long legs. He has a white mane that covers his eyes. His ears also stick up out of the unruly mane and he wears a thin brown bridle.
Stronger is very loyal to his rider, Doc Q, as he is always seen carrying him, whether during a fight with Ace or after being poisoned by Magellan. He, like his owner, seems to always be sick.
Abilities and Powers
Despite being a very sick horse, Stronger has the strength and stamina to carry around Doc Q for an extended period of time and only succumbed to exhaustion on an occasional basis. He can also gallop with extraordinary speed while carrying his master as shown in the anime when Teach ordered his crew to kill Whitebeard, Stronger enabled his master to land a hit on Whitebeard after Shiryu. Despite his sickly constitution, Stronger has great endurance, being completely submerged in Magellan's deadly venom and also took a shockwave attack from Sengoku.
Sky Island Saga
Stronger is simply shown to carry his rider, Doc Q, throughout their appearances in Mock Town, often collapsing while carrying his master. After he and his master leave Mock Town with the rest of the Blackbeard Pirates, they set sail on their raft but it is destroyed by the Knock Up Stream, which leaves Stronger and Doc Q struggling to stay afloat.
Water 7 Saga
Post-Enies Lobby Arc
Stronger was once again carrying his sick master during the Blackbeard Pirates' raid on Banaro Island. When Portgas D. Ace attacked Blackbeard, Stronger and Doc Q were knocked back by Ace's Fire Fist. While their captain prepared to retaliate, Stronger carried Doc Q as the Blackbeard Pirates fled the town. They all watched from a safe distance as Blackbeard fought and defeated Ace.
Summit War Saga
Impel Down Arc
During the Blackbeard Pirates' attack on Impel Down, Stronger carried Doc Q. After an exchange of words between Blackbeard and Monkey D. Luffy, Stronger was poisoned along with the rest of the crew by Magellan's Hydra.
Later, the whole crew was saved by an antidote provided by former Chief Guard Shiryu, who accepted Blackbeard's offer and joined their crew. They traveled down to Level 6, where Blackbeard had the prisoners fight their cellmates to the death. Of the survivors, four were recruited to join the crew.
The crew traveled to Marineford, and during the Summit War of Marineford, they were spotted on the execution platform where they had been watching events unfold. Whitebeard attacked them, but they survived and retaliated, killing the Emperor.
Soon after, Stronger helped drape a black cloth over Whitebeard's body and Blackbeard, and the crew then stood guard to stop the Marines and other pirates from interfering. After Blackbeard successfully absorbed the powers of the Gura Gura no Mi, he demonstrated his new abilities while his crew celebrated. Sengoku in his Buddha form attacked the Blackbeard Pirates, who all survived the attack. When Shanks arrived and called for an end to the war, the Blackbeard Pirates left rather than fight the Red Hair Pirates.
In the New World, the Blackbeard Pirates captured Jewelry Bonney and her crew and planned to trade her for a Marine warship. However, when Akainu arrived on the warship, the pirates fled, with Stronger carrying Doc Q.
During the Timeskip
One year after the war at Marineford, the Blackbeard Pirates fought against the remnants of the Whitebeard Pirates and ultimately won.
Four Emperors Saga
The Blackbeard Pirates later attacked Baltigo, the Revolutionary Army's headquarters. Baltigo was destroyed by the time the Marines and Cipher Pol arrived, but the Revolutionary Army was able to escape. The Blackbeard Pirates fled after a brief clash with Cipher Pol.
- Stronger's favorite food are carrots without bombs inside.