Board Thread:General Discussion/@comment-25334258-20160506022245/@comment-24152851-20160516020325

Ben comes up with the names for aliens on the spot, as shown when he thinks up a name for Brainstorm, as well as changing the names of some aliens such as Benwolf to Blitzerwolf.

However, the name he selects seems to get stuck in the Omnitrix programming, so when the DNA is given to a non-sapient being (Vilgax's robots), they'll start using the name as well.