Muthead
The Ability data below is for the maximum available upgrade tier.

X-Factor Ability Slot

Double Me
RAC 'em Up
Max Security
Mossed

Superstar Ability Slot 1

Outside Apprentice
Slot Apprentice
TE Apprentice
Homer
Clutch
Indoor Baller
Slot-O-Matic
Streak Specialist
Post Specialist
In Specialist
Double-Move Elite
Out Corner Elite
Cross Specialist
Post Flag Elite
In Out Elite
Red Zone Threat
In Post Elite
Curl Comeback Elite
Matchup Nightmare
Route Apprentice
Playmaker
Tank

Superstar Ability Slot 2

Outside Apprentice
Slot Apprentice
TE Apprentice
Homer
Clutch
Indoor Baller
Slot-O-Matic
Streak Specialist
Post Specialist
In Specialist
Double-Move Elite
Out Corner Elite
Cross Specialist
Post Flag Elite
In Out Elite
Red Zone Threat
In Post Elite
Curl Comeback Elite
Matchup Nightmare
Route Apprentice
Playmaker
Tank

Superstar Ability Slot 3

Outside Apprentice
Slot Apprentice
TE Apprentice
Homer
Clutch
Indoor Baller
Slot-O-Matic
Streak Specialist
Post Specialist
In Specialist
Double-Move Elite
Out Corner Elite
Cross Specialist
Post Flag Elite
In Out Elite
Red Zone Threat
In Post Elite
Curl Comeback Elite
Matchup Nightmare
Route Apprentice
Playmaker
Tank

Superstar Ability Slot 4

Outside Apprentice
Slot Apprentice
TE Apprentice
Homer
Clutch
Indoor Baller
Slot-O-Matic
Streak Specialist
Post Specialist
In Specialist
Double-Move Elite
Out Corner Elite
Cross Specialist
Post Flag Elite
In Out Elite
Red Zone Threat
In Post Elite
Curl Comeback Elite
Matchup Nightmare
Route Apprentice
Playmaker
Tank