Reply Sam Chun Po vs. ‘I Hear Your Voice’ Different or the Same?

In the tvN drama "Reply 1994" broadcast now, Kim Sung Gyun who is playing the role of Sam Chun Po used to be the firm cop character on the former SBS drama "I Hear Your Voice" and attracted viewers attention.

In "Reply 1994" Kim Sung Gyun acts with a southern drawn and even adds charisma to take control of the TV set.  However, in "I Hear Your Voice" Kim Sung Gyun played the role of the detective that looks into the truth of the murder incident that Min Joon Gook (played by Jung Woong In) committed through looking at the sketchbook that Park Soo Ha (played by Lee Jong Suk) gave him.

Netizens responded to Sam Chun Po being in "I Hear Your Voice" saying, "Sam Chun Po was in "I Hear Your Voice" - how many faces does he have."  "Sam Chun Po "I Hear Your Voice" wow how interesting." "Sam Chun Po "I Hear Your Voice" - something is off but I guess skilled actors are different.