I've only seen him done once before. bios did a really good version of him, with a killer IA (same as fennshysa's The Raft IA). The IA was a little much on a high cost character, so I moved the IA to a Special, which is similar to the VT Special in justabgkid's cards. I used MU Wiki to massage his grid. My grid still felt deficient in Intellect, so I added 2 extra Specials to emphasize his actions of that type.
(http://img15.deviantart.net/c75d/i/2017/105/3/a/18_ronan_by_justaopfan-db5x0oe.png)
Accuser Corps (*VT) Reserve Teammate may play Special cards from Reserve for remainder of game. This card may not be negated.
http://img14.deviantart.net/78d3/i/2017/102/3/5/accuser_corps_by_justaopfan-db5jrre.png
Annihilators (*BW) Opponent must discard the top 5 cards of the Draw Pile and the top 3 cards of the Power Pack into the Dead Pile.
http://img02.deviantart.net/5221/i/2017/102/2/f/annihilators_by_justaopfan-db5jror.png
Cosmic Energy Bolt (AR) Acts as a level 7 Energy attack.
http://img00.deviantart.net/2f70/i/2017/102/5/c/cosmic_energy_bolt_by_justaopfan-db5jrmm.png
Exoskeleton Body Armor (*HA) Level 1 through 3 Power card hits on Ronan do not count for Spectrum KO for remainder of game.
http://img14.deviantart.net/6b90/i/2017/102/e/b/exoskeleton_body_armor_by_justaopfan-db5jrkt.png
Kree Resources (HI) Ronan may place and play any Kree Special cards for reminder of game.
http://img08.deviantart.net/81b4/i/2017/102/f/6/kree_resources_by_justaopfan-db5jrih.png
Military Tactician (AL) Play when Ronan is attacked. Before letting attack hit, remove 1 hit from Ronan's or Teammate's Permanent Record.
http://img03.deviantart.net/8924/i/2017/102/8/a/military_tactician_by_justaopfan-db5kgkk.png
Strategic Strike (JC) Acts as a level 5 Intellect attack. May play 1 additional Special card.
http://img10.deviantart.net/11e5/i/2017/102/5/5/strategic_strike_by_justaopfan-db5jret.png
Time/Motion Displacement Field (AO) Negates the effect of any 1 Special card played by Opponent.
http://img02.deviantart.net/88b8/i/2017/102/1/6/time_motion_displacement_field_by_justaopfan-db5khpa.png
Universal Weapon (GJ) Acts as a level 4 Multipower attack. May make 1 additional attack.
http://img03.deviantart.net/49a8/i/2017/102/9/2/universal_weapon_by_justaopfan-db5jray.png
let me know what you think.
edit: moved a point from fighting to strength. while he's excellent at hand-to-hand combat, his strength and armor are more integral to the character than his fighting skill.
i stand accused of liking what i see