Mojo is searching his brother Snorky and to move faster in his research decided to ride the boar.
A letter from an Imperial artist that Mojo has in his inventory will give you more details on the story of these two rieklings


INSTALLATION
First time? no problem! Go ahead as for a normal mod

Are you updating? If you are updating to the v1.8 (included) onwards, you should follow these steps:
1. take all the inventory from your current v1.7 or lower Mojo
2. dismiss your Mojo
2.1 (optional) open the console command, select v1.7 or lower Mojo, write "disable", press enter. Your old Mojo will disappear
2.2 (optional) hire a normal Riekling
2.3 (optional) go in a interior as empty as possible 
3. Save your geme in a new file
4. Install the new version, v1.8 (included) onwards. You can overwrite the old files
At this point your old Mojo will not exist anymore. The new file (v1.8 onwards) uses different reference numbers for Mojo and every item of the mod, that's why we have to do these steps
4.1 (optional) keep a buck up. If you don't, don't worry, I am leaving all the former versions available to download so you can go back at any time
5. load your saving and (if you did the optional step 2.2 dismiss the normal Riekling) hire your new Mojo.
6. save again, in a new file
7. use this to clean up your just saved file (it might be dirty might be clean already) - click here for the 46s tutorial 
8. enjoy!



Mojo can swim, equip armors and great swords.



He is very fart moving in a straignt line but slow turning and cutting corners. 
He can only attack male and due to the attack animation you can have few bugs. Mojo can get stuck easily.

Disable/Enable Trick - Bug Fixing
if Mojo get stuck, doesn't move and doesn't open any dialog, just open your console command, point at him, type disable (press enter), type enable (press enter), done. You fix it
This is not my fault, Bethesda didn't put too much effort on this type of character.

Location:
You can find Mojo waiting for you next to Damphall Mine (on Solstheim)

HOW TO HIRE MOJO
You can hire Mojo as you hire a normal Riekling. 
You need first to complete the quest given in Thirsk Mead Hall siding with the Rieklings.
If you have a humanoid follower hired you can face some bug. You might need to dismiss your human follower, hire Mojo and hire your human follower suddenly after (it's not me, it's a game bug).

Being a non-humanoid follower Mojo counts as pet, like a normal Riekling or a dog. So you can have your favourite follower and Mojo together!
If you like rising, you might have a look at Snorky:

Snorky the Versatile Riekling 



Other suggested mods (not mine):
Quieter Riekling Breathing
Riekling Reavers patch SE
Riekling Reavers
Riekling Roughriders
Immersive Riekling player home