What happens if you're debating against a banned opponent?

I started a debate on Combat Sports a while ago, but my opponent got banned. Can he/she still post an argument? What should I do? 

Normally if you started the debate, you’re not normally penalized - and you can just wait for the win.

When banned users create new accounts and spam new debates - those will normally get deleted, and there has been talk of deleting debates that were in the challenge people when a person is banned, but it’s not currently a rule. 

Ah, okay. One more thing,

What does it mean if a banned user says: "Alt of banned user"?

It means a user has been banned, and has created an alternate account to get around the ban.

Some sites call them 'multis', others 'sock puppets'.

This term 'alt' is based on [alt]ernate account. :)

Ah, okay, thanks.

Oh, 

and why the water? I like the other profile pic better

It’s a subtle protest against imabench’s use of a frozen profile picture

A swarm of chinchillas descends upon you, of course.  

Be sure to still make a single point in your debate (just an assertion, or repeating the topic heading), and extend it each round to ensure the win (literally just typing "Extend." will be enough each round after the first). There have been plenty of times where both sides ended up forfeiting, or even someone forfeited out, but they had made a case which was wholly dropped and unchallenged so won.

Something pretty cool is that for people who are not insane, we can now apply bans to certain activities. Such as an otherwise banned user might be allowed to finish their ongoing debates (not the case today, as they started making fake accounts... not even getting into him resembling a fake account to begin with).

You can also create a new debate on the topic if you're still in the mood to debate it. That will have no baring on the nearly automatic win you'll receive for the current one.