Mr. Pogo
Onita's first feud began in the summer of 1990 when Onita defeated Lee Gak-soo in a different style fight on May 19 and then the two showed respect to each other and teamed to defeat Mitsuteru Tokuda and Sambo Asako in a tag team match on June 2. Goto was irate at Onita for teaming with karate fighters and toning down professional wrestling and he brought in Mr. Pogo to FMW and Onita began feuding with Goto and Pogo. Onita defeated Goto in an empty arena match on June 24 and then successfully defended the Brass Knuckles Heavyweight Championship against Goto in the first-ever no ropes exploding barbed wire deathmatch at Summer Spectacular. After the match, Onita and Goto ended their feud by embracing each other and putting away their differences and then Onita began a legendary rivalry against Mr. Pogo, with Onita defeating Pogo in the first singles encounter in a street fight on August 25. Onita successfully defended the Brass Knuckles Heavyweight Championship against Pogo in a Texas Deathmatch at 1st Anniversary Show.