Power spectrum multipoles of galaxies with f_Hα > f₀ for Flagship (blue points), the first 1000 Geppetto mocks (orange lines and shaded areas), and the 1000 EuclidLargeMocks (ELM, red lines and shaded areas). We show here the first redshift bin, z ∈ [0.9, 1.1]. For the Pinocchio sets we report the average measurement as a line and its variance as a shaded area; Geppetto and ELM lines are very similar and hard to distinguish. The Flagship points are assigned an errorbar equal to the standard deviation of the EuclidLargeMocks.