Count multiple tables as one count

I have seen how to do multiple counts for different tables, but never how to combine them all into one. I have a MySQL DB where I am running the following query:

SELECT characters.name, COUNT(*) AS wiki_unlocks
    FROM wiki_items
    INNER JOIN characters
    ON characters.character_id=wiki_items.character_id
    GROUP BY wiki_items.character_id
    ORDER BY wiki_unlocks DESC
    LIMIT 10;

This is giving me the following which is great:

name          wiki_unlocks
player1       2
player2       1

I want to get a combined count of all of the 'wiki_xxxx' tables. For example I want 'wiki_items'(above) + 'wiki_armors' + 'wiki_weapons' + ...

Thanks for any help :D