User blog comment:Starfox u/Sockputting/@comment-303594-20140801145821

It depends on the context. If someone is banned from Wikia as a whole, then bypassing that block isn't allowed. Note that some users disable their accounts to change username, so it may look like someone's blocked when they're not, if you're in doubt - please and they'll figure it out.

On individual wiki blocks, it does depend on the wiki - but almost all wikis will consider sockpuppeting to get round a ban unacceptable, and they may well increase the length of the original ban.

Creating more than one account on Wikia (without the intention of getting around a ban, or influencing community discussions) is fine - you could have an additional account for testing, or making a bot - for example.