[1] The character subsequently appears in Daredevil #22-23 (Nov.-Dec. 1966), #26-27 (March–April 1967), Iron Man #60-61 (July-Aug. 1973, Werewolf by Night #42-43 (Jan., March 1977), and Peter Parker, the Spectacular Spider-Man #25-28 (Dec. 1978-March 1979).

[2] He later clashed with Spider-Man again, with the same result, when he launched a big attack on the World Motors Building in order to steal a new auto engine design, the XB-390, intending to modify it into a weapon.

When he heard of a fight between Spider-Man and Daredevil through a live news broadcast, he executed a fresh assault on the World Motors Building and stole the XB-390.

While fleeing the scene he overheard Foggy Nelson, a lawyer working out of an office in his building, insinuating to Karen Page that he is really Daredevil.

[3] Days later, he noticed Page going into the law office late one evening; his suspicious aroused, he confronted her in his civilian identity in the hope she would let slip some of Nelson's secrets (due to an editorial oversight, he is referred to as "Mr. Dunn" in this scene).

[4] During this time he employed Nelson to draw up new leases for his building;[5] it is never revealed if this was genuinely a matter of business, or an excuse to more closely study the man that he believed to be Daredevil.

[Note 1] With his henchmen Steele and Hacker, he stole Tony Stark's experimental space shuttle and ran afoul of Iron Man, who defeated him.

In battle with Spider-Man and Daredevil, he "permanently" blinded the web-slinger and threatened New York with his "bombdroid", a Tri-Man carrying a nuclear device.

He is an engineering genius, and his inventions include the Tri-Man, the Tri-Animan, the Bombdroid, a truck with a "hydraulic hoist", a helicopter with a force field, and a teleportation device which can affect even unwitting targets who are far away.

He suffers from obsessive–compulsive personality disorder[volume & issue needed] and insists that his men execute his plans according to timetables that schedule each step down to the second.