Alteus debuted from WL to ISC 26 in Yottobán, Chruno. After a bit of a rocky start to the start of the contest (DNQ first two editions), Alteus managed to qualify 5 times in a row, even scoring a 2nd place in ISC 28 and ISC 32. After a non-qualification in ISC 33, they sent Janet Devlin, a singer of Grolskiric origin and returned to the final.
They finally managed to win in ISC 37 with Bryan Rice & Julie and their song "Curtain Call". But they got to host ISC twice even, after Caprika declined to do so for ISC 36, so did Irdminia because the latter expressed to host only when they win.