From The TimeSplitters Wiki

The Consultant was a suited character featured in the Arcade League challenge Men in Grey. He may be a civillian on the NeoTokyo and Chicago Story levels. He is similar to Lawyer and Accountant but he is not playable.

The original author of Consultant does not have any further information on this article. The author may return to finish the article when information has been gathered, however they welcome anyone to expand on this article.