More badass than his little brother, and has the most badass whistle of all time to boot

:chainer

Name: Proto Man (Referred to as Blues in Japan and some media such as Archie Comics)
Origin: Mega Man (Classic)
Gender: Male
Classification: Robot Master DLN-000
Age: Physical age is unknown (activated in 20XX but disappears come 21XX)
Powers and Abilities: Super strength, super speed, insane durability, Proto Buster, Charged Shot, Slide, Variable Weapons System, absolute zero ice, resistance to absolute zero ice, immunity to soul manipulation, immunity to mind manipulation, black hole manipulation, resistance to EMPs, fire hotter than the core of the earth, water weapons, earth weapons, bladed weapons, boomerangs, strength augmentation, concrete transmutation, weather manipulation, bombs, explosives, flight, omnidirectional shields, space/time manipulation, space/time warping, time freeze, time slow, EMP manipulation, can breathe underwater, Big Bang Strike
Weaknesses: Is powered by sunlight so spending large amounts of time underground without an alternate source of power can be dangerous. His core is very unstable so if he receives enough damage he will malfunction and explode. Big Bang Strike leaves him in no condition to fight.
Destructive Capacity: Small planet level attack potency (Vastly stronger than stardroids and Mega Man 10 era robot masters, as well as his little brother. On par with SunstarEvil Energy & Duo) small planet level+ with the Big Bang Strike (Destroyed King's shield which not even Mega Man & Bass could scratch) with island level area of effect | Multi-planet level (Killed the stardroid Mars)
Range: Multiple kilometers with certain weapons | Likely thousands of kilometers (on par with Mega Man)
Speed: MFTL combat speed (Can react to Duo's Meteor Form and Mega Man who navigated Space Rush) MFTL+ travel speed with teleporter (Teleported to planets in another solar system instantly, as well as Pluto) FTL running speed (Reached the escape velocity of Galaxy Man's black hole) | Relativistic+ combat speed (roughly comparable to Quick Man & the Stardroids) Massively hypersonic travel speed with Shield (On par with Bass & Tengu Man)
Durability: Small planet level (Tanked blasts from Wily's #10 machine which is stronger than Wily's #8 machine that injured Duo, survived Galaxy Man tossing his black holes at him) at least small planet level+ with his shield (nobody within his world has been able to even dent it including people on Sunstar's level) | Multi-planet level (Scaling to Classic Mega Man and the Stardroids)
Lifting Strength: Class G+ (Casually lifted a large fortress with only one hand)
Striking Strength: Class XJ | Class XKJ
Stamina: Essentially limitless due to being a robot master
Standard Equipment: Proto buster, Proto Coil, Proto Jet, Robot Master copied weapons, Proto Shield, Proto Booster, Proto Trench Coat
Intelligence: Skilled at quickly adapting to tasks and combat situations, and is a quick learner. Wise robot with much experience, great in terms of espionage and stealth.
Notable Attacks/Techniques:

-Proto Buster: Shoots laser bolts, can charge it and launch a continuous beam named Proto Strike.

-Big Bang Strike: By far his most powerful attack, however it leaves him exhausted after using it. It was so powerful that it utterly destroyed King's shield, which Mega Man and Bass were unable to so much as scratch. Mega Man and Bass were planet level at this point in the series

-Chill Spike: Launches a freezing special gel and freezes the opponent alive).

-Commando Bomb: Launches a bomb that can be manually controlled), Rebound Striker (launches a rubber ball that bounces)

-Solar Blaze: Launches fireballs left and right.

-Thunder Wool: Launches a thunder cloud that rises and launches two thunder bolts.

-Triple Blade: Fires three blades that move in different directions.

-Water Shield: A rotating shield of bubbles will protect the user.

-Wheel Cutter: Launches a sharp wheel.

A rough list of his powers (he has access to most of these)

Key: Canon Only Proto Man | Composite Manga Proto Man (Mega/Giga Mix + Game Adaptation Manga)

Notable OBD Victories:

Motoko Kusanagi (Ghost in the Shell)
Luigi (Super Mario Bros) (He wins if it's Classic VS Classic)
Kill La Kill verse (He was allied with Bass and Mega Man but can win on his own)
Knuckles (Sonic the Hedgehog)

Notable OBD Losses:

Luigi with Chaos Heart (Super Paper Mario)
Zero (Mega Man X)