Most of you will already be aware of the Fantasica Encyclopedia that's regularly updated by Isylia. Or maybe you're even using the new (sortable) unit page at the Unofficial Fantasica Wiki. Here's another spreadsheet that you might find useful! It's similar to the Fantasica Encyclopedia, except it contains unit stats for Arena (a.k.a. Colloseum) and Battle Arena (which also apply to Guild Events).
Link: Fantasica ARENA Encyclopedia
Be aware that this spreadsheet is much slower than what you're used to. You might even see a message at the top of the screen telling you that it's still busy calculating. This is because the stats are all derived from the normal land/air/sea attack stats, using formula's.
There are no pictures included in the spreadsheet, nor will there ever be. You can look those up on Isylia's Encyclopedia or on the Wiki page. There is currently no column for Unit HP in Battle Arena, because gathering those statistics is a work still in progress. You can take a sneak peak at what I've gathered so far by checking out the second post in the following topic: Unit HP in Battle Arena. Be sure to contribute data if you wish to help out; it would be much appreciated.
Please feel free to comment on or criticize the spreadsheet in this topic. I will consider any suggestion you make, be it a big or a small change.