The most badass character in the series

 

Name: Zekka (original name unknown)
Origin: Battle Angel Alita
Gender: Male
Classification: Cyborg, Upload, Karateka, Thumb wrestling champion
Age: Over 90 years old
Powers and Abilities: Super strength, speed, durability, agility, dexterity, master martial artist, capable of using and countering vibrations/internal attacks, immortality (type 1), regeneration (low), has incredible shock resistance due to the structure of his body, can achieve supersonic speeds whilst standing still by ionizing the polyethylene solution in his body effectively making it plasma which can also increase his power many times over, able to expand and contract his body, incredible heat resistance (able to eat plasma), by using his Compound Eyes he is able to predict his opponent's moves shortly before they occur (similar to precognition)
Weaknesses: Overconfident, his skills drop if angered enough, stores antimatter in his body in a particle accelerator called 'Navel reactor', If it is hit, it can detonate and as a result, it can damage/kill him, Dragon Slayer is basically a suicide attack
Destructive Capacity: Island level (split an asteroid in half with a single karate chop)continent level with Dragon Slayer, likely planet level via hype
Range: Several hundred meters via powerscaling, 2 kilometers with Expansion Punch, hundreds of kilometers with Dragon Slayer, possibly planetary
Speed: Sub-relativistic+ (faster than Sechs)
Durability: Island level (was completely unaffected by Sechs' attacks, was also just fine after being in the epicenter of his Dragon Slayer before Don Fua BFR'd it)
Lifting Strength: Class G+
Striking Strength: Class EJ (his punches hit harder than nuclear bombs), Class YJ with Dragon Slayer
Stamina: Superhuman+ (can fight Sechs for hours)
Standard Equipment: His cyborg body and a motorcycle
Intelligence: Mastery of martial arts and other fighting techniques
Notable Attacks/Techniques:

- Dragon Slaying Bone Crusher: He is capable of circulating the material in his body at supersonic speeds which gives him great power.

- Expansion Punch: Zekka expands and contracts his body within the error range of nanoseconds which is followed up by a punch having thousands of times more power than his normal punch.

- Expansion Punch Barrage: Throws a massive salvo of rapid expansion punches at an enemy.

- Expansion Kick: Zekka expands and contracts his body within the error range of nanoseconds which is followed up by a punch having thousands of times more powerful than his normal kick.

- Dragon Slayer: A powerful suicidal technique of Zekka, where he concentrates all the antimatter he has in his fist, inflicting massive damage to his surroundings and to himself as well.

 Ignition Blow: A punch that channels all of the energy from the user's fist directly into the target's body resulting in them taking more damage than usual.

 

Notable OBD Victories:

Acnologia (Fairy Tail) - Acnologia Profile (outdated, but Zekka can at least stalemate with Dragon Slayer)
- Genos (OnePunch-Man) - Genos Profile
- Hakumen no Mono (Ushio and Tora) - Hakumen no Mono Profile (outdated, but Zekka can at least stalemate with Dragon Slayer)
- Meruem (Hunter x Hunter) - Meruem Profile

Notable OBD Losses:

- Fukki (Houshin Engi) - Taikoubou Profile (This was Base Fukki) (outdated, but Zekka can at the very least stalemate with Dragon Slayer)

Inconclusive Matches:

- Bunchuu (Houshin Engi) - Bunchuu Profile (outdated, now favors Zekka)

Other: