This list is not based soley on characters IQ levels, but on the ability to apply their intelligence to a number of situations. Some of the characters listed in the middle probably have higher IQ's then those above them(ie Leader has a much greater IQ than either Doom or Richards) however based on what they've accomplished with their intellect, they get a lower ranking. (ie magus being able to manipulate Thanos in "Infinity War" puts him on a pretty high level, even though Marvel only states his intelligence as being "normal"
Others get low rankings..because they only have extensive expertise in one particular field(ie Tony Stark..Robotics...)
Damb..so many peeps to choose from..anyway here goes....
1. High Evolutionary(The guy created a whole freaking planet and race of people)
2. Thanos(no need for explanation)
3. Magus(Even Thanos respects him..)
4. Richards (Regularly outwits Doom..Galactus..no need to say more..)
5. Doom(Outsmarted the Devil...Rules a country.. is an expert in just about every scientific field..)
6. Apocolypse(Celestial Tech..makes him pretty high IMO..still hasn't done a damb thing)
7. Kang(Genius..Doom even regards him as an intellectual superior)
8. Zarroko the Tommorow Man(A poor Man's Kang..but still damb intelligent)
9. Bruce Banner(One of the smartest normal guys in the MU...is an expert in just about every scientific field)
10. Leader(Smart as hell..but hasn't accomplished a damb thing..I mean the damb retarded "Savage Hulk" always foils his plans....)
11. Mad Thinker(Smart as hell..but not very original..steals most of his ideas from others.)
12. Tony Stark(Expert in Robotics)
13. Magneto(Expert geneticist..)
14. Xavier(Same deal as Magneto..)
15. Wizard(Expert in Genetics and Robotics..hasn't done a damb thing though)
I know I've left some off the list..(ie Tyrannus, Hank Pym, and a sh** load of others..) But I'd be writing this list all damb day if counted everyone..
Anyway..Feel free to give your comments and/or criticism(probably more criticism..lol)