Son Goku (Kakarrot) has many abilities like, super strength, utilization of ki, flight, teleportation, super speed, enhanced reflexes, and Super Saiyan transformation that increase strength, speed, and durability.
Vegeta is the King of an extraterrestrial race of warriors known as the Saiyans just like the series' protagonist Goku. Vegeta is extremely vain and proud, constantly referring to his heritage throughout the series.
Alucard is the closest thing to an immortal. For as he said himself "There is no such thing as immortals" but he does not age. In reality, Alucard's immortality comes from the number of humans whose blood he consumed over the ages, which is a number in the millions. As many come to realize, whenever he drinks his victim's blood, Alucard also sucks out the soul of that person to obtain their memories while converting the victim into an extension of himself referred to as a Familiar. When he retains all the claimed souls within his body, Alucard can easily regenerate from near fatal injuries in seconds. His regenerative abilities took even Anderson by surprise in their first encounter; Alucard was able to reconstitute himself within minutes of being decapitated and having his heart pierced, injuries that would kill an ordinary vampire
Ichigo constantly gives off Reiatsu at the level of a captain. Even when worn-out in battle, he can continue fighting effectively while still using Getsuga TenshÅ or unleashing and maintaining his Bankai. Even at less than half strength, his spiritual energy is comparable to a captain-level fighter.
Luffy has immense physical strength, and is capable of lifting up large boulders, breaking stone, shattering steel with his bare hands, lifting and dragging a massive ball of solid gold attached to his arm, pushing apart large buildings, and shoulder flipping a huge man; his strength was further proven when he effortlessly stopped a stomp from Donquixote Doflamingo, a tremendously strong man who is twice Luffy's size, with only one foot from an angle with no leverage.
Natsu Dragneel, has many strengths mainly being his Dragon slayer magic, which is said to rival and overtake the power of dragons! Natsu and his dragon slayer ability has an ultimate form called Dragon force, in that state Natsu has dragon scales on his body and if that wasn't cool enough he gets an added strength boost with his dragon slayer magic, but the only way he can achieve it is by eating a golden flame.