One Punch Man: Stronger Enemies

Sonic

The explosions didn't even stop. The heroes tried to remain calm and thought of a solution. 'Why don't you and Fubuki combine your powers and try to stop the explosions?' Genos suggested. 'We can stop some explosions, but we cannot stop all the explosions happening around this planet.' Tatsumaki replied 'That's impossible.' 'Then... Can you stop all the explosions just in this city?' Genos asked. Tatsumaki smirked. 'That's easy!' she said 'So easy, in fact, that I won't even need my sister's help to do it.' 'Then do it.' Genos said 'I know protecting the city we are in instead of protecting other cities is a little selfish but if we survive, there's a better chance that the alien will be defeated! So let's do this for saving humanity! Because this alien's intellect seems like a God Level Threat.' Tatsumaki did just as Genos said and stopped all the explosions in the city they were in with her Psychic Powers. 

Suddenly Saitama saw a ninja rushing towards them. The others couldn't see him since he was just too fast. He came to the heroes in an instant. 'What's happening?' Sonic asked 'Are any of you doing all of this?' 'No, an alien is.' Genos said. 'An alien?' Sonic asked. 'Yeah.' Genos replied 'That alien had also took controll over Tatsumaki and other heroes and Master Saitama saved us and now he is attacking us with bombs. This alien seems like a intelligent coward and that's what makes him dangerous. He is not revealing himself and attacking us, so we never even get a chance to attack back. All we can do for now is to try and stop the bombs...' 

'Huh, all of you are such fools!' Sonic said 'Only if I knew about this bomb thing before, I would have destroyed all these bombs with my incredible speed and my ninja sword before the even exploded!' 'But the thing is, nobody knew about this before they exploded.' Silverfang told. 'Yeah, if I knew that I would slice those bombs with my katana too!' Atomic Samurai said. 'Are you a Samurai?' Sonic asked. 'Yeah, why?' Atomic Samurai asked back.

Sonic suddenly got a nasty grin on his face. 

'Battle me.' he yelled 'I want to see who is speedier! You or me. S Class hero or a Nobody. Samurai or Ninja...' Every hero was shocked by Sonic just said. 'AT A TIME LIKE THIS?' Atomic Samurai yelled. 'Yeah, it's going to be a battle of speed anyways, so won't take too long!' Sonic said. 'Is this ninja dude crazy?' Child Emperor asked. 'Probably...' Tatsumaki answered. 

'I won't let you get away till you battle me...' Sonic said. Atomic Samurai smiled as he looked up at Sonic. 'Fine then...' he said as he held his katana and took it out.