[[Image:KISS space ace face.svg|thumb|left|120px|The Spaceman]]
When [[Ace Frehley]]Frehleyk left2002an Kiss inutzi 2002zuenean, taldeak Thayer wasaukeratu thezuen band'sFrehley choice to replace Frehleyordezkatzeko. SimmonsSimmonsek andeta StanleyStanleyk wantedtaldearen tojatorrizko retainitxura theklasikoa classicmantentzea looknahi ofzuten theeta originalThayerrek lineup and chose Thayer to don Frehley'sFrehleyren "Spaceman" makeupmakillajea andhartzea replicateeta hisbere performancemugimenduak anticserrepikatzea erabaki zuten. In March2002ko 2002martxoan, ThayerThayerrek playedlehen hisaldiz firstjo showzuen asKiss ataldeko memberkide ofbezala Kisskontzertu atpribatu afuntzio privatebatean function in JamaicaJamaican. TheHurrengo next monthhilabetean, he appeared at the 50<sup>th</sup> anniversary show of Dick Clark's American Bandstand,Bandstanden again50. inurteurrenean theagertu, berriro ere Spaceman makeupmoduan jantzita. SinceOrduz thengeroztik, ThayerThayerek hasKissekin played for Kissjotzen injarraitu thedu [[Kiss Symphony: Alive IV|Kiss Symphony]] show atkontzertuan [[Melbourne]]n, [[Australia]], on a mini tour of [[JapanJaponnia]],ko onbira tourtxiki withbaten, [[Aerosmith]],ekin onbaterako thebiran, Rock The Nation World TourTourren, andKISS inAlive several35 otherbiran, singleSonic shows.Boom Over HeEurope also played lead guitar for Kiss on their Alive/35 North American tourbiran, whichHottest beganShow onOn SeptemberEarth 25,Tour 2009biran ateta [[Cobobeste Center]]hainbat inkontzertutan [[Detroit, MI]]ere.<ref>[http://kissonline.com/stream/article/display/id/18960 Kissonline.com]</ref>
Thayer has also been involved in the production of various video and CD products related to Kiss including the ''Kiss Symphony: Alive IV'' DVD, the Second Coming DVD, KissOlogy, and the main title sequence for the film "Detroit Rock City".
