After making a few appearances on New Japan Pro Wrestling/World Wrestling Federation joint shows in early 1985, Bundy officially debuted in the WWF on the March 16, 1985 airing of WWF Championship Wrestling, defeating Mario Mancini.
First managed by Jimmy Hart, he was immediately pushed with dominating victories over all of his opponents.
Bundy also reprised his gimmick of demanding a five-count from the referee while pinning an opponent, to show how badly he had beaten his hapless opponent.
He defeated S.D. "Special Delivery" Jones in what was announced as only nine seconds at the first WrestleMania at Madison Square Garden (it was actually about 17 seconds).
This remained the shortest match in WrestleMania history until 2008 when Kane defeated Chavo Guerrero Jr. in a legitimate eight seconds at WrestleMania XXIV. (
Kane's record would subsequently go on to be broken by both The Rock and Brock Lesnar).

In September 1985, Hart traded Bundy to manager Bobby Heenan in exchange for Adrian Adonis and The Missing Link.
After joining the Heenan Family, Bundy feuded extensively with André the Giant, a feud which started during an angle where Bundy interfered in one of André's matches and delivered several splashes, giving the Giant a kayfabe broken sternum.
They feuded for several months, including a pair of tag team matches on Saturday Night's Main Event II and III in late 1985, where Bundy, and André's other nemesis, Big John Studd, first faced André and Tony Atlas and then André and WWF World Heavyweight Champion Hulk Hogan.
On September 23, 1985, Bundy faced André the Giant at Madison Square Garden in a match billed as "the Colossal Jostle".
André dominated the match, with the match ending after Big John Studd came from the locker rooms to Bundy's aid and attacked the Giant, causing a disqualification.

Bundy also began targeting Hogan and the WWF World Championship in late 1985.
At Saturday Night's Main Event V, Hogan was dominating challenger the Magnificent Muraco when Bundy (with Heenan in tow) ran to ambush Hogan.
With Muraco's help, Bundy repeatedly gave Hogan avalanches and big splashes, which caused Hogan to severely bruise his ribs (kayfabe).
Bundy demanded a match and claimed Hogan was afraid of him, setting up their feud.
Hogan demanded revenge and agreed to a steel cage match for the WWF World Heavyweight Championship as the main event of WrestleMania 2 in the Los Angeles portion of the event, which Hogan won.
After making a few appearances on New Japan Pro Wrestling/World Wrestling Federation joint shows in early 1985, Bundy officially debuted in the WWF on the March 16, 1985 airing of WWF Championship Wrestling, defeating Mario Mancini. First managed by Jimmy Hart, he was immediately pushed with dominating victories over all of his opponents. Bundy also reprised his gimmick of demanding a five-count from the referee while pinning an opponent, to show how badly he had beaten his hapless opponent. He defeated S.D. "Special Delivery" Jones in what was announced as only nine seconds at the first WrestleMania at Madison Square Garden (it was actually about 17 seconds). This remained the shortest match in WrestleMania history until 2008 when Kane defeated Chavo Guerrero Jr. in a legitimate eight seconds at WrestleMania XXIV. (Kane's record would subsequently go on to be broken by both The Rock and Brock Lesnar). 
In September 1985, Hart traded Bundy to manager Bobby Heenan in exchange for Adrian Adonis and The Missing Link. After joining the Heenan Family, Bundy feuded extensively with André the Giant, a feud which started during an angle where Bundy interfered in one of André's matches and delivered several splashes, giving the Giant a kayfabe broken sternum. They feuded for several months, including a pair of tag team matches on Saturday Night's Main Event II and III in late 1985, where Bundy, and André's other nemesis, Big John Studd, first faced André and Tony Atlas and then André and WWF World Heavyweight Champion Hulk Hogan. On September 23, 1985, Bundy faced André the Giant at Madison Square Garden in a match billed as "the Colossal Jostle". André dominated the match, with the match ending after Big John Studd came from the locker rooms to Bundy's aid and attacked the Giant, causing a disqualification.
Bundy also began targeting Hogan and the WWF World Championship in late 1985. At Saturday Night's Main Event V, Hogan was dominating challenger the Magnificent Muraco when Bundy (with Heenan in tow) ran to ambush Hogan. With Muraco's help, Bundy repeatedly gave Hogan avalanches and big splashes, which caused Hogan to severely bruise his ribs (kayfabe). Bundy demanded a match and claimed Hogan was afraid of him, setting up their feud. Hogan demanded revenge and agreed to a steel cage match for the WWF World Heavyweight Championship as the main event of WrestleMania 2 in the Los Angeles portion of the event, which Hogan won.
King Kong Bundy