  We present a class of multiplicative functions $f:\mathbb{N}\to\mathbb{C}$
with bounded partial sums. The novelty here is that our functions do not need
to have modulus bounded by $1$. The key feature is that they pretend to be the
constant function $1$ and that for some prime $q$, $\sum_{k=0}^\infty
\frac{f(q^k)}{q^k}=0$. These combined with other conditions guarantee that
these functions are periodic and have sum equal to zero inside each period.
Further, we study the class of multiplicative functions $f=f_1\ast f_2$, where
each $f_j$ is multiplicative and periodic with bounded partial sums. We show an
omega bound for the partial sums $\sum_{n\leq x}f(n)$ and an upper bound that
is related with the error term in the classical Dirichlet divisor problem.
